Elenco servizi di Windows - ParlandoSparlando

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					The table below illustrates how I've set up the information for each service. ................... 3
Alerter Service ................................................................................................................................................. 4
Application Layer Gateway Service............................................................................................................... 4
Application Management Service .................................................................................................................. 4
Automatic Updates Service ............................................................................................................................ 5
Background Intelligent Transfer Service...................................................................................................... 5
ClipBook Service .............................................................................................................................................. 6
COM+ Event System Service......................................................................................................................... 6
COM+ System Application Service................................................................................................................ 7
Computer Browser Service ............................................................................................................................ 7
Cryptographic Services Service ..................................................................................................................... 8
DCOM Server Process Launcher ...................................................................................................................... 8
DHCP Client Service ........................................................................................................................................ 9
Distributed Link Tracking Client Service ...................................................................................................... 9
Distributed Transaction Coordinator Service............................................................................................. 10
DNS Client Service ........................................................................................................................................ 10
Error Reporting Service ................................................................................................................................ 11
Event Log Service.......................................................................................................................................... 11
Fast User Switching Compatibility Service................................................................................................. 12
Help and Support Service ............................................................................................................................ 12
Human Interface Device Access [SP2 Terminology] HID Input Service [Pre SP2 Terminology] ...... 13
HTTP SSL ....................................................................................................................................................... 13
IMAPI CD-Burning COM Service.................................................................................................................. 14
Indexing Service............................................................................................................................................ 14
Internet Connection - Firewall (ICF) / Sharing (ICS) Service................................................................. 15
IPSEC Services Service ................................................................................................................................. 15
Logical Disk Manager Service ...................................................................................................................... 16
Logical Disk Manager Administrative Service............................................................................................ 16
Machine Debug Manager Service................................................................................................................ 16
Messenger Service ........................................................................................................................................ 17
MS Software Shadow Copy Provider Service ............................................................................................ 17
Net Logon Service ......................................................................................................................................... 18
NetMeeting Remote Desktop Sharing Service .......................................................................................... 18
Network Connections Service ...................................................................................................................... 19
Network DDE Service.................................................................................................................................... 19
Network DDE DSDM Service........................................................................................................................ 19
Network Location Awareness (NLA) Service ............................................................................................. 20
Network Provisioning Service......................................................................................................................... 20
NT LM Security Support Provider Service.................................................................................................. 21
Performance Logs and Alerts Service......................................................................................................... 21
Plug and Play Service ................................................................................................................................... 21
Portable Media Serial Number Service ....................................................................................................... 22
Print Spooler Service..................................................................................................................................... 22
Protected Storage Service............................................................................................................................ 23
QoS RSVP Service ......................................................................................................................................... 24
Remote Access Auto Connection Manager Service .................................................................................. 24
Remote Access Connection Manager Service ........................................................................................... 25
Remote Desktop Help Session Manager Service ...................................................................................... 25
Remote Procedure Call (RPC) Service........................................................................................................ 25
Remote Procedure Call (RPC) Locator Service.......................................................................................... 26
Remote Registry Service .............................................................................................................................. 26
Removable Storage Service ......................................................................................................................... 27
Routing and Remote Access Service .......................................................................................................... 27
ScriptBlocking Service................................................................................................................................... 27
Secondary Logon Service ............................................................................................................................. 28
Security Accounts Manager Service............................................................................................................ 28
Security Center ................................................................................................................................................ 29
Server Service................................................................................................................................................ 29
Shell Hardware Detection Service............................................................................................................... 30
Smart Card Service ....................................................................................................................................... 30
Smart Card Helper Service........................................................................................................................... 30
SSDP Discovery Service................................................................................................................................ 31
System Event Notification Service .............................................................................................................. 31
System Restore Service................................................................................................................................ 31
Task Scheduler Service ................................................................................................................................ 32
TCP/IP NetBIOS Helper Service .................................................................................................................. 32
Telephony Service ......................................................................................................................................... 32
Telnet Service ................................................................................................................................................ 33
Terminal Services Service ............................................................................................................................ 33
Themes Service ............................................................................................................................................. 34
Uninterruptible Power Supply Service........................................................................................................ 34
Universal Plug and Play Device Host Service ............................................................................................ 35
Upload Manager Service .............................................................................................................................. 35
Volume Shadow Copy Service ..................................................................................................................... 35
WebClient Service ......................................................................................................................................... 36
Windows Audio Service ................................................................................................................................ 36
Windows Firewall/Internet Connection Sharing (ICS) ................................................................................... 37
Windows Image Acquisition (WIA) Service ............................................................................................... 37
Windows Installer Service............................................................................................................................ 37
Windows Management Instrumentation Service...................................................................................... 38
Windows Management Instrumentation Driver Extensions .................................................................... 38
Windows Time Service ................................................................................................................................. 38
Wireless Zero Configuration Service........................................................................................................... 39
WMI Performance Adapter Service............................................................................................................. 39
Workstation Service ...................................................................................................................................... 39
            The table below illustrates how I've set up the information for each service.

     Service Name              Alerter                  Process Name              services.exe
     Default Settings            XP Home : Manual                       XP Pro : Manual
                               Notifies selected users and computers of administrative alerts. If the
     Microsoft Service         service is stopped, programs that use administrative alerts will not
     Description               receive them. If this service is disabled, any services that explicitly
                               depend on it will fail to start.
     Dependencies              Workstation
                               If you're part of a network that sends and receives administrative alerts
     Real World Description
                               this service is for you.
     Is this service needed?         Possibly          Recommended Setting:               Manual
     Note


Microsoft has assigned what they call a Display Name to each service. I've used that name to create the
Services Index. It is the same name that appears in the Name column in the Services Window. Supposedly
this name can be changed on the General tab if you want something more descriptive.

    Service Name - The name the service is actually called. This name is often quite cryptic while at other
times easily identifiable. It comes from the General tab and cannot be modified.
    Process Name - The name of the actual process that is run when the service is activated. As you go
through the services you'll no doubt wonder why svchost.exe is listed so many times as being the Process
Name. The explanation can be found here. The Process Name is taken from the General tab.
    Default Settings - These are the default settings for the Home and Professional versions of XP when a
clean installation is performed.
    Microsoft Service Description - This is taken directly from the General tab. Some of the descriptions
are easily understood while others make no sense at all to the average (or any other) user.
    Dependencies - Lists any additional services that are required for the service to run. The information is
taken from the Dependencies tab.
    Real World Description - If I felt the Microsoft Service Description was a bit vague or needed some
clarification this is where I tried to give you a better idea of what the service does or why you might want it
loaded.
    Is This Service Needed? - There are three choices here and I stress that these are strictly my opinion.
         A    Yes      means I believe it's essential to have this service running and set to Automatic.
         A Possibly means that depending on your hardware and software choices this service might be
one you choose to have enabled. It might have an Automatic, Manual, or Disabled setting.
         A     No      means that I see no point in wasting the resources on the service and that your system
shouldn't suffer any ill effects by having it disabled. It will have a Disabled Setting.
    Recommended Setting - Again, these are my opinions only, but I feel that for most situations this
setting will give you a good balance between system functionality and resource conservation.
    Note - Anything else I want to toss in I think you might find helpful.
                                            Alerter Service

                                                                                svchost.exe -k
Service Name              Alerter                    Process Name
                                                                                LocalService
Default Settings            XP Home : Manual                         XP Pro : Manual
                                                                    XP Pro w/SP2 : Disabled
                          Notifies selected users and computers of administrative alerts. If the
Microsoft Service         service is stopped, programs that use administrative alerts will not
Description               receive them. If this service is disabled, any services that explicitly
                          depend on it will fail to start.
Dependencies              Workstation
                          If you're part of a network that sends and receives administrative alerts
Real World Description
                          this service is for you.
Is this service needed?          Possibly          Recommended Setting:                 Disabled
Note                      Updated to reflect SP2 changes.




                              Application Layer Gateway Service

Service Name              ALG                        Process Name               alg.exe
Default Settings            XP Home : Manual                         XP Pro : Manual
Microsoft Service         Provides support for 3rd party protocol plug-ins for Internet Connection Sharing
Description               and the Windows Firewall.
Dependencies
                          One of the bits and pieces you need if you connect to the internet using
Real World Description
                          Microsoft's Internet Connection Sharing or Internet Connection Firewall,
Is this service needed?          Possibly          Recommended Setting:                 Manual
Note                      Updated to reflect SP2 changes.




                                 Application Management Service

Service Name              AppMgmt                    Process Name               svchost.exe -k netsvcs
Default Settings            XP Home : Manual                         XP Pro : Manual
Microsoft Service         Provides software installation services such as Assign, Publish, and
Description               Remove.
Dependencies              None
Real World Description Used when you modify an application i.e. Add/Remove.
Is this service needed?          Possibly          Recommended Setting:                 Manual
Note                      Updated to reflect SP2 changes.
                                   Automatic Updates Service


Service Name              Wuauserv                   Process Name                svchost.exe -k netsvcs
Default Settings            XP Home : Automatic                       XP Pro : Automatic
                          Enables the download and installation of Windows updates. If this service is
Microsoft Service
                          disabled, this computer will not be able to use the Automatic Updates feature or
Description               the Windows Update Web site.
Dependencies              None
Real World Description See the Microsoft Description above.
Is this service needed?          Possibly           Recommended Setting:                Automatic
                          Updated to reflect SP2 changes.

                          If you choose to update manually this service is not needed. Personally,
                          I manually run update every morning so I have this service disabled. It's
Note
                          been my experience that Automatic Update has missed an occasional
                          update as well as delaying the time from when the update was released
                          to when Automatic Update states it's available. Your experience may
                          vary.




                           Background Intelligent Transfer Service


Service Name              BITS                       Process Name                svchost.exe -k netsvcs
Default Settings            XP Home : Automatic                       XP Pro : Automatic
                                                                     XP Pro w/SP2 : Manual
                          Transfers files in the background using idle network bandwidth. If the service is
                          stopped, features such as Windows Update, and MSN Explorer will be unable to
Microsoft Service         automatically download programs and other information. If this service is
Description               disabled, any services that explicitly depend on it may fail to transfer files if
                          they do not have a fail safe mechanism to transfer files directly through IE in
                          case BITS has been disabled.
Dependencies              Remote Procedure Call (RPC)
                       In theory this should be a useful service, especially since it can continue
                       an interrupted download due to a logoff or shutdown situation.
Real World Description
                       Unfortunately, it can also be prone to trouble when the resumption
                       occurs. See the KB article listed in Notes section.
Is this service needed?            No               Recommended Setting:                  Manual
                          Updated to reflect SP2 changes.
Note
                          Update Available for the Background Intelligent Transfer Service (Only
                          for pre-SP2 systems)
                                          ClipBook Service

Service Name              ClipSrv                    Process Name                clipsrv.exe
Default Settings            XP Home : Manual                          XP Pro : Manual
                                                                     XP Pro w/ SP2 : Disabled
                          Enables ClipBook Viewer to store information and share it with remote
Microsoft Service         computers. If the service is stopped, ClipBook Viewer will not be able to share
Description               information with remote computers. If this service is disabled, any services that
                          explicitly depend on it will fail to start.
Dependencies              Network DDE                               Network DDE DSDM
                       If you're heavy into cutting 'n' pasting random snippets to others on the
Real World Description LAN, this is your baby. If not, it's easy enough to fire it up on the few
                       occasions it is needed.
Is this service needed?             No              Recommended Setting:                 Disabled
Note                      Updated to reflect SP2 changes.




                                    COM+ Event System Service

Service Name              EventSystem                Process Name                svchost.exe
Default Settings            XP Home : Manual                          XP Pro : Manual
                          Supports System Event Notification Service (SENS), which provides automatic
                          distribution of events to subscribing Component Object Model (COM)
Microsoft Service
                          components. If the service is stopped, SENS will close and will not be able to
Description               provide logon and logoff notifications. If this service is disabled, any services
                          that explicitly depend on it will fail to start.
Dependencies              Remote Procedure Call (RPC)
                       One of the support files that you'll probably never have any use for, but
Real World Description if you disable it, the warning notices you receive are worse than leaving
                       it enabled.
Is this service needed?         Possibly            Recommended Setting:                  Manual
                          Updated to reflect SP2 changes.
Note
                          *See System Event Notification Service
                               COM+ System Application Service

Service Name              COMSysApp                 Process Name             dllhost.exe
Default Settings            XP Home : Manual                       XP Pro : Manual
                          Manages the configuration and tracking of Component Object Model
Microsoft Service         (COM)+-based components. If the service is stopped, most COM+-based
Description               components will not function properly. If this service is disabled, any
                          services that explicitly depend on it will fail to start.
Dependencies              Remote Procedure Call (RPC)
                       Basically, this is the application that controls COM+ Event System. One
                       of the support files that you'll probably never have any use for, but if
Real World Description you disable it, the warning notices you receive are worse than leaving it
                       enabled. Disabling this service will generate Event Log entries noting it
                       isn't running. An annoyance, but not harmful.
Is this service needed?         Possibly           Recommended Setting:              Manual
                          Updated to reflect SP2 changes.

Note                      The Manual setting avoids the Event Log entries.
                          *See COM+ Event System
                          *See System Event Notification Service




                                   Computer Browser Service


Service Name              Browser                   Process Name             svchost.exe -k netsvcs
Default Settings            XP Home : Automatic                    XP Pro : Automatic
                          Maintains an updated list of computers on the network and supplies this
Microsoft Service         list to computers designated as browsers. If this service is stopped, this
Description               list will not be updated or maintained. If this service is disabled, any
                          services that explicitly depend on it will fail to start.
Dependencies              Server                                Workstation
                       Straightforward as can be, it keeps track of your computers on the
Real World Description network. If you're on a LAN, set it to Automatic. For stand alone
                       systems, Disable is the way to go.
Is this service needed?         Possibly           Recommended Setting:            Automatic
Note                      Updated to reflect SP2 changes.
                                 Cryptographic Services Service


Service Name              CryptSvc                  Process Name               svchost.exe -k netsvcs
Default Settings            XP Home : Automatic                     XP Pro : Automatic
                          Provides three management services: Catalog Database Service, which
                          confirms the signatures of Windows files; Protected Root Service, which
                          adds and removes Trusted Root Certification Authority certificates from
Microsoft Service
                          this computer; and Key Service, which helps enroll this computer for
Description
                          certificates. If this service is stopped, these management services will
                          not function properly. If this service is disabled, any services that
                          explicitly depend on it will fail to start.
Dependencies              Remote Procedure Call (RPC)
                       Provides the annoying boxes that pop up telling you a driver you are
Real World Description about to install isn't digitally signed. If you disable this service you'll be
                       flooded with uncertified driver notifications.
Is this service needed?         Possibly           Recommended Setting:                   Manual
                          Updated to reflect SP2 changes.

Note                      I set this to Manual and if it's needed it starts. If you get errors or
                          repeated calls for the service, set it to Automatic. A lot depends on how
                          many unsigned drivers are on your system and of what type drivers.




                                  DCOM Server Process Launcher


Service Name              DcomLaunch                Process Name               svchost -k DcomLaunch

Default Settings            XP Home : Not Available                 XP Pro :Not Available

                          XP Home w/SP2: Automatic                 XP Pro w/SP2 : Automatic

Microsoft Service
                          Provides launch functionality for DCOM services.
Description
Dependencies              No dependencies

Dependencies

Real World Description
Is this service needed?            Yes             Recommended Setting:                   Automatic
Note                      Updated to reflect SP2 changes. (This service added with SP2)
                                       DHCP Client Service


Service Name              Dhcp                      Process Name           svchost.exe -k netsvcs
Default Settings            XP Home : Automatic                    XP Pro : Automatic
Microsoft Service         Manages network configuration by registering and updating IP addresses
Description               and DNS names.
                          AFD Networking Support
Dependencies                                                   NetBios over Tcpip
                          Environment
Dependencies              TCP/IP Protocol Driver               IPSEC driver
                       This is how your computer gets a Dynamic IP address so you can
Real World Description connect to the internet. If Internet Connection Sharing is enabled, you
                       need DHCP Client. Also required for most DSL/Cable connections.
Is this service needed?          Possibly          Recommended Setting:          Automatic
                          Updated to reflect SP2 changes.
Note
                          Not needed if you have a static IP address (very few home users have
                          static IP addresses) or if it's a stand alone computer.




                           Distributed Link Tracking Client Service


Service Name              TrkWks                    Process Name           svchost.exe -k netsvcs
Default Settings            XP Home : Automatic                    XP Pro : Automatic
Microsoft Service         Maintains links between NTFS files within a computer or across
Description               computers in a network domain.
Dependencies              Remote Procedure Call (RPC)
                       For those that are part of a domain -and- use NTFS it has some value in
Real World Description keeping links across machines up to date, especially in the case of
                       databases updated via the network.
Is this service needed?          Possibly          Recommended Setting:            Manual
                          Updated to reflect SP2 changes.

                          10/17/2002 - I originally listed this service as not needed and
Note                      recommended it be disabled. If you are using the FAT32 file system that
                          advice still applies. However, as more and more users gravitate to NTFS
                          and judging from the number of readers that have written, I've changed
                          this to a Possibly needed service and suggest it be set to Manual.
                          Distributed Transaction Coordinator Service


Service Name              MSDTC                     Process Name              msdtc.exe
Default Settings            XP Home : Manual                        XP Pro : Manual
                          Coordinates transactions that span multiple resource managers, such as
Microsoft Service         databases, message queues, and file systems. If this service is stopped,
Description               these transactions will not occur. If this service is disabled, any services
                          that explicitly depend on it will fail to start.
Dependencies              Remote Procedure Call (RPC)            Security Accounts Manager
                          Closely related to Distributed Link Tracking Client discussed previously.
Real World Description
                          Really serves no purpose for home user systems.
Is this service needed?            No              Recommended Setting:              Disabled
Note                      Updated to reflect SP2 changes.




                                        DNS Client Service

                                                                              svchost.exe -k
Service Name              Dnscache                  Process Name
                                                                              NetworkService
Default Settings            XP Home : Automatic                     XP Pro : Automatic
                          Resolves and caches Domain Name System (DNS) names for this
                          computer. If this service is stopped, this computer will not be able to
Microsoft Service
                          resolve DNS names and locate Active Directory domain controllers. If this
Description
                          service is disabled, any services that explicitly depend on it will fail to
                          start.
Dependencies              TCP/IP Protocol Driver
                       As the description above states, it caches Domain Name System (DNS)
Real World Description names for this computer. If disabled, it simply means the system will go
                       upstream to resolve DNS names rather than use the cache.
Is this service needed?            No              Recommended Setting:              Disabled
                          Updated to reflect SP2 changes.
Note
                          Start this service if you receive a 'DNS Resolver Failed To Flush The
                          Cache' message.
                                     Error Reporting Service


Service Name              ERSvc                     Process Name            svchost.exe -k netsvcs
Default Settings            XP Home : Automatic                    XP Pro : Automatic
Microsoft Service         Allows error reporting for services and applications running in non-
Description               standard environments.
Dependencies              Remote Procedure Call (RPC)
                          This is responsible for the box that pops up wanting you to report an
Real World Description
                          application error or system crash to Microsoft.
Is this service needed?            No              Recommended Setting:            Disabled
                          Updated to reflect SP2 changes.
Note
                          I find screaming an obscenity at the offending application much more
                          therapeutic than reporting the crash to Microsoft. To each his/her own.




                                         Event Log Service


Service Name              Eventlog                  Process Name            services.exe
Default Settings            XP Home : Automatic                    XP Pro : Automatic
                          Enables event log messages issued by Windows-based programs and
Microsoft Service
                          components to be viewed in Event Viewer. This service cannot be
Description
                          stopped.
Dependencies              Remote Procedure Call (RPC)
                          One of the few services that actually cannot be stopped. Event logs can
Real World Description
                          be viewed through the Microsoft Management Console.
Is this service needed?            Yes             Recommended Setting:           Automatic
                          Updated to reflect SP2 changes.
Note
                          See Microsoft Management Console for more info.
                          Fast User Switching Compatibility Service


                          FastUser Switching
Service Name                                        Process Name             svchost.exe -k netsvcs
                          Compatibility
Default Settings            XP Home : Manual                       XP Pro : Manual
Microsoft Service         Provides management for applications that require assistance in a
Description               multiple user environment.
Dependencies              Terminal Services
                       Supplies the 'Switch User' functionality associated with the logoff option.
Real World Description It's a nice touch if you really do have that many users that are constantly
                       switching in and out of the same box.
Is this service needed?             No             Recommended Setting:              Manual
Note                      Updated to reflect SP2 changes.




                                    Help and Support Service


Service Name              helpsvc                   Process Name             svchost.exe
Default Settings            XP Home : Automatic                    XP Pro : Automatic
                          Enables Help and Support Center to run on this computer. If this service
Microsoft Service
                          is stopped, Help and Support Center will be unavailable. If this service is
Description
                          disabled, any services that explicitly depend on it will fail to start.
Dependencies              Remote Procedure Call (RPC)
                          This connects to the online help via Microsoft available from the Help
Real World Description
                          and Support option on the Start Menu.
Is this service needed?             No             Recommended Setting:             Automatic
                          Updated to reflect SP2 changes.

                          This XP feature has received a lot of bad press, but it can be quite
Note
                          useful. It may not be everybody's cup of tea, but it can provide a lot of
                          good info or quick pointers to info on the Microsoft site. In spite of the
                          "No" above for service needed, I'd still set it to Automatic.
                     Human Interface Device Access [SP2 Terminology]
                        HID Input Service [Pre SP2 Terminology]


Service Name              HidServ                    Process Name               svchost.exe -k netsvcs
Default Settings            XP Home : Disabled                       XP Pro : Disabled
                          Enables generic input access to Human Interface Devices (HID), which
                          activates and maintains the use of predefined hot buttons on keyboards,
Microsoft Service         remote controls, and other multimedia devices. If this service is stopped,
Description               hot buttons controlled by this service will no longer function. If this
                          service is disabled, any services that explicitly depend on it will fail to
                          start.
Dependencies              Remote Procedure Call (RPC)
                          If you have a peripheral that uses the items mentioned in the description
Real World Description
                          above this is what lets it work.
Is this service needed?         Possibly           Recommended Setting:                   Manual
Note                      Updated to reflect SP2 changes.




                                              HTTP SSL

                                                                                svchost.exe -k
Service Name              HTTPFilter                 Process Name
                                                                                HTTPFilter
Default Settings            XP Home : Not Available                  XP Pro : Not Available
                                                                    XP Pro w/SP2 : Manual
                          This service implements the secure hypertext transfer protocol (HTTPS) for the
Microsoft Service
                          HTTP service, using the Secure Socket Layer (SSL). If this service is disabled,
Description               any services that explicitly depend on it will fail to start.
Dependencies              HTTP

Dependencies
                       Another added security provision for sites that make use of HTTPS such as
Real World Description banking and e-commerce sites. Set it to Manual and it will kick in when needed,
                       although just to be on the safe side I set it to Automatic.
Is this service needed?          Possibly          Recommended Setting:                   Automatic
Note                      Updated to reflect SP2 changes. (This service added with SP2)
                                  IMAPI CD-Burning COM Service


Service Name              ImapiService               Process Name            imapi.exe
Default Settings            XP Home : Manual                        XP Pro : Manual
                          Manages CD recording using Image Mastering Applications Programming
Microsoft Service         Interface (IMAPI). If this service is stopped, this computer will be unable
Description               to record CDs. If this service is disabled, any services that explicitly
                          depend on it will fail to start.
Dependencies
                       As it says, if you want to have the XP CD burning capability, this will give
                       you the power to Burn Baby, Burn. If you have a problem with burning
Real World Description
                       CD's, check Auto Update for a patch and then set this service to
                       Automatic.
Is this service needed?           Possibly          Recommended Setting:             Manual
                          Updated to reflect SP2 changes.
Note
                          Yes, you -do- have to have a CD burner installed or else this is useless.
                          It -does not- turn a standard CD Drive into a CD-R or CD-RW.




                                             Indexing Service


Service Name              cisvc                      Process Name            cisvc.exe
Default Settings            XP Home : Manual                        XP Pro : Manual
Microsoft Service         Indexes contents and properties of files on local and remote computers;
Description               provides rapid access to files through flexible querying language.
Dependencies              Remote Procedure Call (RPC)
                       What Microsoft said above. What they don't say is that this service tends
                       to run amok, indexing far more than necessary and starting without
                       warning. For the benefit it provides, the resource usage is far from an
                       equal tradeoff. However, in all fairness, if you have a reasonably
Real World Description powered machine you might as well leave Indexing Service on. It can
                       speed things up a bit and most of the systems capable of running XP
                       efficiently shouldn't be bogged down by having this service running. If it
                       does take a noticeable performance hit it's really time to consider
                       upgrading.
Is this service needed?           Possibly          Recommended Setting:             Manual
                          Updated to reflect SP2 changes.
Note
                          Before disabling, uninstall this via the Add/Remove Programs Control
                          Panel applet.
               Internet Connection - Firewall (ICF) / Sharing (ICS) Service


Service Name              SharedAccess              Process Name             svchost.exe
Default Settings            XP Home : Manual                       XP Pro : Automatic
                                                                   XP Pro w/SP2 : Eliminated in SP2

Microsoft Service         Provides network address translation, addressing, name resolution
Description               and/or intrusion prevention services for a home or small office network.
                          Application Layer Gateway
Dependencies                                                    Network Connections
                          Service
                                                                Remote Access Connection
Dependencies              Network Location Awareness
                                                                Manager
                          As it says above. Set this service to the same setting used for
Real World Description
                          Application Layer Gateway Service.
Is this service needed?         Possibly           Recommended Setting:            Automatic
Note




                                      IPSEC Services Service


Service Name              PolicyAgent               Process Name             lsass.exe
Default Settings            XP Home : Automatic                    XP Pro : Automatic
Microsoft Service         Manages IP security policy and starts the ISAKMP/Oakley (IKE) and the
Description               IP security driver.
Dependencies              Remote Procedure Call (RPC)           IPSEC Driver
Dependencies              TCP/IP Protocol Driver
                          Primarily a host authentication device used with data transfer and
Real World Description
                          encryption operations on a domain.
Is this service needed?         Possibly           Recommended Setting:              Manual
                          Updated to reflect SP2 changes.

Note                      Normally I'd set this to No/Disable but a few reports have trickled in
                          saying this service was needed. Until I can prove/disprove them, I've
                          changed it to Possibly/Manual.
                                  Logical Disk Manager Service


Service Name              dmserver                  Process Name              svchost.exe
Default Settings            XP Home : Manual                        XP Pro : Automatic
                          Detects and monitors new hard disk drives and sends disk volume
                          information to Logical Disk Manager Administrative Service for
Microsoft Service
                          configuration. If this service is stopped, dynamic disk status and
Description
                          configuration information may become out of date. If this service is
                          disabled, any services that explicitly depend on it will fail to start.
Dependencies              Plug and Play                          Remote Procedure Call (RPC)
                       Essential to managing and updating the hard drives. Works in
Real World Description conjunction with Disk Management plug-in in Microsoft Management
                       Console.
Is this service needed?            Yes             Recommended Setting:             Automatic
Note                      Updated to reflect SP2 changes.




                          Logical Disk Manager Administrative Service


Service Name              dmadmin                   Process Name              dmadmin.exe /com
Default Settings            XP Home : Manual                        XP Pro : Manual
Microsoft Service         Configures hard disk drives and volumes. The service only runs for
Description               configuration processes and then stops.
Dependencies              Plug and Play                          Logical Disk Manager
Dependencies              Remote Procedure Call (RPC)
                          Works in concert with Logical Disk Manager, but can be set to Manual
Real World Description
                          and it will be started and stopped as stated above.
Is this service needed?            Yes             Recommended Setting:               Manual
Note                      Updated to reflect SP2 changes.



                                Machine Debug Manager Service


Service Name              MDM                       Process Name              mdm.exe
Default Settings            XP Home : Manual                        XP Pro : Manual
Microsoft Service
                          Manages local and remote debugging for Visual Studio debuggers
Description
Dependencies              Remote Procedure Call (RPC)

Real World Description
Is this service needed?            Yes             Recommended Setting:               Manual
Note
                                        Messenger Service


Service Name              Messenger                 Process Name             svchost.exe -k netsvcs
Default Settings            XP Home : Automatic                    XP Pro : Automatic
                                                                   XP Pro w/SP2 : Disabled
                          Transmits net send and Alerter service messages between clients and
Microsoft Service         servers. This service is not related to Windows Messenger. If this service
Description               is stopped, Alerter messages will not be transmitted. If this service is
                          disabled, any services that explicitly depend on it will fail to start.
Dependencies              NetBIOS Interface                     Plug and Play
Dependencies              Remote Procedure Call (RPC)           Workstation
Real World Description
Is this service needed?            No              Recommended Setting:             Disabled
Note                      Updated to reflect SP2 changes.




                          MS Software Shadow Copy Provider Service


Service Name              SwPrv                     Process Name             dllhost.exe
Default Settings            XP Home : Manual                       XP Pro : Manual
                          Manages software-based volume shadow copies taken by the Volume
Microsoft Service         Shadow Copy service. If this service is stopped, software-based volume
Description               shadow copies cannot be managed. If this service is disabled, any
                          services that explicitly depend on it will fail to start.
Dependencies              Remote Procedure Call (RPC)
                          Related to using the Microsoft Backup Utility. If you use it, you might
Real World Description
                          want to set this to Manual, but otherwise ---
Is this service needed?            No              Recommended Setting:             Disabled
Note                      Updated to reflect SP2 changes.
                                         Net Logon Service


Service Name               Netlogon                  Process Name            lsass.exe
Default Settings             XP Home : Manual                       XP Pro : Manual
                                                                    XP Pro w/SP2 : Manual

Microsoft Service          Supports pass-through authentication of account logon events for
Description                computers in a domain.
Dependencies               Workstation
                           Domain Authentication, used when you log into the Domain. No domain?
Real World Description
                           No Net Logon needed in spite of the way the name sounds.
Is this service needed?             No              Recommended Setting:            Disabled
Note                       Updated to reflect SP2 changes.




                          NetMeeting Remote Desktop Sharing Service


Service Name               mnmsrvc                   Process Name            mnmsrvc.exe
Default Settings             XP Home : Manual                       XP Pro : Manual
                           Enables an authorized user to access this computer remotely by using
Microsoft Service          NetMeeting over a corporate intranet. If this service is stopped, remote
Description                desktop sharing will be unavailable. If this service is disabled, any
                           services that explicitly depend on it will fail to start.
Dependencies
                           Makes it possible for a remote user with NetMeeting to access your
Real World Description
                           computer.
Is this service needed?             No              Recommended Setting:            Disabled
                           Updated to reflect SP2 changes.
Note
                           If you figure out why anyone would want to allow this service to run, let
                           me know.
                                  Network Connections Service


Service Name              Netman                    Process Name              svchost.exe -k netsvcs
Default Settings            XP Home : Manual                        XP Pro : Manual
Microsoft Service         Manages objects in the Network and Dial-Up Connections folder, in
Description               which you can view both local area network and remote connections.
Dependencies              Remote Procedure Call (RPC)
                          Basically, it controls the network and your ability to connect to the
Real World Description
                          internet via Dial-Up.
Is this service needed?            Yes             Recommended Setting:              Automatic
Note                      Updated to reflect SP2 changes.



                                        Network DDE Service


Service Name              NetDDE                    Process Name              netdde.exe
Default Settings            XP Home : Manual                        XP Pro : Manual
                                                                   XP Pro w/SP2 : Disabled

                          Provides network transport and security for Dynamic Data Exchange
                          (DDE) for programs running on the same computer or on different
Microsoft Service
                          computers. If this service is stopped, DDE transport and security will be
Description
                          unavailable. If this service is disabled, any services that explicitly depend
                          on it will fail to start.
Dependencies              Network DDE DSDM
Real World Description So far, the only thing I know related to this service is Clipbook.
Is this service needed?            No              Recommended Setting:               Disabled
Note                      Updated to reflect SP2 changes.



                                  Network DDE DSDM Service


Service Name              NetDDEdsdm                Process Name              netdde.exe
Default Settings            XP Home : Manual                        XP Pro : Manual
                                                                   XP Pro w/SP2 : Disabled

                          Manages Dynamic Data Exchange (DDE) network shares. If this service
Microsoft Service
                          is stopped, DDE network shares will be unavailable. If this service is
Description
                          disabled, any services that explicitly depend on it will fail to start.
Dependencies
Real World Description So far, the only thing I know related to this service is Clipbook.
Is this service needed?            No              Recommended Setting:               Disabled
Note                      Updated to reflect SP2 changes.
                               Network Location Awareness (NLA) Service


     Service Name              Nla                       Process Name               svchost.exe -k netsvcs
     Default Settings            XP Home : Manual                        XP Pro : Manual
     Microsoft Service         Collects and stores network configuration and location information, and
     Description               notifies applications when this information changes.
     Dependencies              AFD Networking Support Environment TCP/IP Protocol Driver
     Real World Description A part of the Internet Connection Sharing (ICS) component.
     Is this service needed?         Possibly           Recommended Setting:                   Manual
                               Updated to reflect SP2 changes.
     Note
                               If ICS is disabled, change this to disabled.


                 TEG Reader Comments about Network Location Awareness (NLA) service.

11/06/2002     From: Patrik

The Network Location Awareness service doesn't just have to do with internet connection sharing but also
with the built in firewall so you should suggest this service to be automatic as well.

TEG: I agree that Internet Connection Firewall is also impacted by NLA and if you use ICF setting it to
Automatic won't hurt a thing.




                                         Network Provisioning Service


     Service Name              xmlprov                   Process Name               svchost.exe -k netsvcs
     Default Settings            XP Home : Not Available                 XP Pro : Not Available
                                                                        XP Pro w/SP2 : Manual

     Microsoft Service         Manages XML configuration files on a domain basis for automatic network
     Description               provisioning.
     Dependencies              Remote Procedure Call (RPC)

     Dependencies

     Real World Description
     Is this service needed?         Possibly           Recommended Setting:                   Manual
     Note                      Updated to reflect SP2 changes. (This service added with SP2)
                           NT LM Security Support Provider Service


Service Name              NtLmSsp                   Process Name              lsass.exe
Default Settings            XP Home : Manual                        XP Pro : Manual
Microsoft Service         Provides security to remote procedure call (RPC) programs that use
Description               transports other than named pipes.
Dependencies
Real World Description Provides support for Telnet and Message Queuing
Is this service needed?         Possibly           Recommended Setting:              Disabled
Note                      Updated to reflect SP2 changes.




                             Performance Logs and Alerts Service


Service Name              SysmonLog                 Process Name              smlogsvc.exe
Default Settings            XP Home : Manual                        XP Pro : Manual
                          Collects performance data from local or remote computers based on
                          preconfigured schedule parameters, then writes the data to a log or
Microsoft Service
                          triggers an alert. If this service is stopped, performance information will
Description
                          not be collected. If this service is disabled, any services that explicitly
                          depend on it will fail to start.
Dependencies
                       Another way to monitor system performance. If the box and network
Real World Description stats interest you, set this to Manual. If ignorance is bliss, Disabled is the
                       way to go.
Is this service needed?         Possibly           Recommended Setting:              Disabled
Note                      Updated to reflect SP2 changes.


                                      Plug and Play Service


Service Name              PlugPlay                  Process Name              services.exe
Default Settings            XP Home : Automatic                     XP Pro : Automatic
                          Enables a computer to recognize and adapt to hardware changes with
Microsoft Service
                          little or no user input. Stopping or disabling this service will result in
Description
                          system instability.
Dependencies
Real World Description This is the automatic discovery of devices attached to your computer.
Is this service needed?            Yes             Recommended Setting:             Automatic
                          Updated to reflect SP2 changes.
Note
                          One of the best features of XP - that truly works, at least most of the
                          time.
                             Portable Media Serial Number Service


Service Name              WmdmPmSp                   Process Name               svchost.exe
Default Settings            XP Home : Automatic                       XP Pro : Automatic
                                                                    XP Pro w/SP2 : Manual
                          Retrieves the serial number of any portable media player connected to this
Microsoft Service
                          computer. If this service is stopped, protected content might not be down loaded
Description               to the device.
Dependencies
Real World Description Retrieves a serial number embedded into portable music players.
Is this service needed?             No             Recommended Setting:                 Disabled
                          Updated to reflect SP2 changes.

                          Update: 10/13/2002 - I've received a number of letters from readers in
Note
                          response to my request for information about this service. Obviously, if
                          you are using a Portable Music Player it would be best to have this
                          service enabled.




                                         Print Spooler Service


Service Name              Spooler                    Process Name               spoolsv.exe
Default Settings            XP Home : Manual                          XP Pro : Manual
                                                                    XP Pro w/SP2 : Automatic

Microsoft Service
                          Loads files to memory for later printing.
Description
Dependencies              Remote Procedure Call (RPC)
Real World Description We used to call this the print que, but spooler works also.
Is this service needed?         Possibly           Recommended Setting:                Automatic
                          Updated to reflect SP2 changes.

Note                      What this doesn't tell you is that if you have it disabled your printers
                          won't work. Of course, if you don't have a printer (local or network) then
                          kill this service.
                                    Protected Storage Service


Service Name              ProtectedStorage          Process Name              lsass.exe
Default Settings            XP Home : Automatic                     XP Pro : Automatic
Microsoft Service         Provides protected storage for sensitive data, such as private keys, to
Description               prevent access by unauthorized services, processes, or users.
Dependencies              Remote Procedure Call (RPC)
                          By 'sensitive data' they mean passwords, encryption data, etc. Closely
Real World Description
                          tied into other 'features' like AutoComplete.
Is this service needed?         Possibly           Recommended Setting:              Automatic
                          Updated to reflect SP2 changes.

                          While this service is not needed, most users will want it to avoid
Note
                          constantly having to type passwords. However, be aware it does carry
                          risks, especially if your firewall security and security patch updating is
                          lax.
                                         QoS RSVP Service


Service Name              RSVP                      Process Name             rsvp.exe
Default Settings            XP Home : Manual                       XP Pro : Manual
Microsoft Service         Provides network signaling and local traffic control setup functionality for
Description               QoS-aware programs and control applets.
Dependencies              AFD Networking Support Environment
Dependencies              Remote Procedure Call (RPC)            TCP/IP Protocol Driver
                          Supposedly provides a form of load balancing that shifts bandwidth
Real World Description
                          between applications where it's most needed.
Is this service needed?            No              Recommended Setting:              Disabled
                          Updated to reflect SP2 changes.

                          The following is a direct quote from Microsoft.

                          "There have been claims in various published technical articles and
                          newsgroup postings that Windows XP always reserves 20 percent of the
Note                      available bandwidth for QoS. These claims are incorrect. The information
                          in the "Clarification about QoS in End Computers That Are Running
                          Windows XP" section of this article correctly describes the behavior of
                          Windows XP systems."

                          I'd suggest you read the entire Knowledge Base article Q316666 and
                          decide for yourself whether you think this is needed.




                     Remote Access Auto Connection Manager Service

                                                                                 svchost.exe -k
Service Name              RasAuto                   Process Name
                                                                                 netsvcs
Default Settings            XP Home : Manual                                      XP Pro : Manual
Microsoft Service         Creates a connection to a remote network whenever a program
Description               references a remote DNS or NetBIOS name or address.
Dependencies                   Remote Access Connection Manager                      Telephony
                          Allows you to click an embedded link and automatically access the
Real World Description
                          network. Can also play a role in DUN and DSL/Cable connections.
Is this service needed?         Possibly            Recommended Setting:               Manual
                          Updated to reflect SP2 changes.
Note
                          Best to set this to Manual to begin with and if you have problems,
                          change it to Automatic.
                          Remote Access Connection Manager Service


Service Name              RasMan                    Process Name             svchost.exe -k netsvcs
Default Settings            XP Home : Manual                       XP Pro : Manual
Microsoft Service
                          Creates a network connection.
Description
Dependencies              Telephony
Real World Description Exactly what it says above.
Is this service needed?         Possibly           Recommended Setting:              Manual
                          Updated to reflect SP2 changes.
Note
                          Definitely required if you are using Internet Connection Sharing.




                      Remote Desktop Help Session Manager Service


Service Name              RDSessMgr                 Process Name             sessmgr.exe
Default Settings            XP Home : Manual                       XP Pro : Manual
                          Manages and controls Remote Assistance. If this service is stopped,
Microsoft Service
                          Remote Assistance will be unavailable. Before stopping this service, see
Description
                          the Dependencies tab of the Properties dialog box.
Dependencies              Remote Procedure Call (RPC)
Real World Description If you're a Remote Desktop user, keep this enabled. Otherwise --
Is this service needed?            No              Recommended Setting:             Disabled
Note                      Updated to reflect SP2 changes.




                             Remote Procedure Call (RPC) Service


Service Name              RpcSs                     Process Name             svchost -k rpcss
Default Settings            XP Home : Manual                       XP Pro : Manual
                                                                   XP Pro w/SP2 : Automatic

Microsoft Service
                          Provides the endpoint mapper and other miscellaneous RPC services.
Description
Dependencies
                       Nobody is exactly sure what this service does, but kill it off and watch
Real World Description your system quickly die. It's a fact that a multitude of the other services
                       depend on this service running.
Is this service needed?           Yes !            Recommended Setting:            Automatic
Note                      Updated to reflect SP2 changes.
                          Remote Procedure Call (RPC) Locator Service


Service Name               RpcLocator                 Process Name                locator.exe
Default Settings             XP Home : Manual                          XP Pro : Manual
Microsoft Service
                           Manages the RPC name service database.
Description
Dependencies               Workstation
                       I don't know what this does by Microsoft's description, but as important
Real World Description as Remote Procedure Call (RPC) is to XP's operation, I figure I'll
                       leave the Locator running also.
Is this service needed?          Possibly            Recommended Setting:                 Manual
Note                       Updated to reflect SP2 changes.




                                      Remote Registry Service

                                                                                  svchost.exe -k
Service Name               RemoteRegistry             Process Name
                                                                                  LocalService
Default Settings             XP Home : Not Available                   XP Pro : Automatic
                           Enables remote users to modify registry settings on this computer. If this
Microsoft Service          service is stopped, the registry can be modified only by users on this
Description                computer. If this service is disabled, any services that explicitly depend
                           on it will fail to start.
Dependencies               Remote Procedure Call (RPC)

                           Do -you- want someone editing -your- registry remotely? I didn't think
Real World Description
                           so. Disabled.
Is this service needed?          Possibly            Recommended Setting:                  Disabled
                           Updated to reflect SP2 changes.

                           1/26/2004 - I've received a number of e-mails from readers saying I should
                           reconsider the "Absolutely Not" rating I originally posted for this service. The
                           1/26/2004 from Patrick, shown below, is typical of the ones I've received, so for
                           the time being I'm changing the recommendation to "Possibly" and will continue
                           to monitor the e-mail for additional responses on whether it should be
Note
                           downgraded again.

                           06/29/2005 - I have once again changed the Recommended Setting to Disabled
                           and suggest you scroll down and read the notes sent in by TEG site visitors. I'm
                           going to leave the "Possibly" in place rather than change it to an "Absolutely
                           Not" scenario, but in 99% of the situations most are likely to encounter, the
                           dangers of having it enabled far outweigh the benefits.
                                   Removable Storage Service


Service Name              NtmsSvc                   Process Name             svchost.exe -k netsvcs
Default Settings            XP Home : Manual                       XP Pro : Manual
Microsoft Service
                          No Description Given
Description
Dependencies              Remote Procedure Call (RPC)
Real World Description Used for things like Zip Drives, Tape Drives, Graphics Pens.
Is this service needed?          Possibly          Recommended Setting:              Manual
                          Updated to reflect SP2 changes.
Note
                          Some users have reported disabling has had a negative effect on their
                          CD ROM, but these reports have been few and far between.




                              Routing and Remote Access Service


Service Name              RemoteAccess              Process Name             svchost.exe -k netsvcs
Default Settings            XP Home : Disabled                     XP Pro : Manual
                                                                   XP Pro w/SP2 : Disabled

Microsoft Service         Offers routing services to businesses in local area and wide area network
Description               environments.
Dependencies              NetBIOSGroup                          Remote Procedure Call (RPC)
Real World Description Allows LAN and WAN dial in access to the computer.
Is this service needed?          Possibly          Recommended Setting:             Disabled
                          Updated to reflect SP2 changes.
Note
                          Doubtful this is needed on a home machine.


                                      ScriptBlocking Service


Service Name                                        Process Name
Default Settings            XP Home :                              XP Pro :
Microsoft Service
                          None
Description
Dependencies
Real World Description Installed by Symantec and relates to malicious script blocking.
Is this service needed?          Possibly          Recommended Setting:            Automatic
                          Updated 10/12/2002 - I originally set this to Disabled but a number of
Note                      readers have written to say they feel it should be set to Automatic, and I
                          agree.
                                     Secondary Logon Service


Service Name              seclogon                  Process Name             svchost.exe -k netsvcs
Default Settings            XP Home : Automatic                    XP Pro : Automatic
                          Enables starting processes under alternate credentials. If this service is
Microsoft Service
                          stopped, this type of logon access will be unavailable. If this service is
Description
                          disabled, any services that explicitly depend on it will fail to start.
Dependencies
                       When Microsoft says 'Alternate Credentials' they are talking about the
Real World Description [Run As...] command which appears on the context menu, allowing a
                       Limited User to run an executable as a higher level user.
Is this service needed?         Possibly           Recommended Setting:             Automatic
                          Updated to reflect SP2 changes.
Note
                          I find this feature very useful but it does compromise security so be
                          aware of what it can allow.




                              Security Accounts Manager Service


Service Name              SamSs                     Process Name             lsass.exe
Default Settings            XP Home : Automatic                    XP Pro : Automatic
Microsoft Service
                          Stores security information for local user accounts.
Description
Dependencies              Remote Procedure Call (RPC)
                          Related to the Secondary Logon function and another security info
Real World Description
                          warehouse, similar to Protected Storage.
Is this service needed?         Possibly           Recommended Setting:             Automatic
Note                      Updated to reflect SP2 changes.
                                            Security Center


Service Name              wscsvc                     Process Name                 svchost.exe -k netsvcs
Default Settings            XP Home : Not Available                   XP Pro : Not Available
                                                                     XP Pro w/SP2 : Automatic

Microsoft Service
                          Monitors system security settings and configurations.
Description
Dependencies              Remote Procedure Call (RPC)
Dependencies              Windows Management Instrumentation Event Log

Real World Description
Is this service needed?          Possibly           Recommended Setting:              See 'Note' Section
                          Updated to reflect SP2 changes. Only available when SP2 is installed.

                          Whether or not this service is needed or not is a tough call. For an experienced
Note                      user that constantly monitors firewall and anti-virus programs by an alternate
                          method, the answer is not needed. For others, I'd suggest leaving it on
                          Automatic. It does provide visual feedback and the little balloons in the
                          Notification Area are hard to ignore, which is good for those lax on security.




                                            Server Service


Service Name              lanmanserver               Process Name                 svchost.exe -k netsvcs
Default Settings            XP Home : Automatic                       XP Pro : Automatic
                          Supports file, print, and named-pipe sharing over the network for this
Microsoft Service         computer. If this service is stopped, these functions will be unavailable.
Description               If this service is disabled, any services that explicitly depend on it will fail
                          to start.
Dependencies
                          Provides basic file and print services on the LAN. No LAN? You don't
Real World Description
                          need this.
Is this service needed?         Possibly            Recommended Setting:                Automatic
Note                      Updated to reflect SP2 changes.
                               Shell Hardware Detection Service


Service Name              ShellHWDetection          Process Name                 svchost.exe -k netsvcs
Default Settings            XP Home : Automatic                      XP Pro : Automatic
Microsoft Service
                          Provides notifications for AutoPlay hardware events.
Description
Dependencies              Remote Procedure Call (RPC)
                          Testing shows that it's related to AutoPlay functionality such as digital
Real World Description
                          cameras, CD ROM's
Is this service needed?         Possibly           Recommended Setting:                Automatic
Note                      Updated to reflect SP2 changes.




                                        Smart Card Service


Service Name              SCardSvr                  Process Name                 SCardSvr.exe
Default Settings            XP Home : Manual                         XP Pro : Manual
                          Manages access to smart cards read by this computer. If this service is
Microsoft Service
                          stopped, this computer will be unable to read smart cards. If this service
Description
                          is disabled, any services that explicitly depend on it will fail to start.
Dependencies              Plug and Play
Real World Description Just what the description says. If you have a Smart Card you need this.
Is this service needed?         Possibly           Recommended Setting:                 Disabled
Note                      Updated to reflect SP2 changes.




                                    Smart Card Helper Service


Service Name              SCardDrv                  Process Name                 SCardSvr.exe
Default Settings            XP Home : Manual                         XP Pro : Manual
                                                                    XP Pro w/SP2 : Eliminated in SP2

                          Enables support for legacy non-plug and play smart-card readers used
Microsoft Service         by this computer. If this service is stopped, this computer will not
Description               support legacy reader. If this service is disabled, any services that
                          explicitly depend on it will fail to start.
Dependencies
                          The same as Smart Card except this is for legacy cards that don't
Real World Description
                          support Plug and Play.
Is this service needed?         Possibly           Recommended Setting:                 Disabled
Note                      Updated to reflect SP2 changes.
                                      SSDP Discovery Service

                                                                               svchost.exe -k
Service Name              SSDPSRV                   Process Name
                                                                               LocalService
Default Settings            XP Home : Manual                         XP Pro : Manual
Microsoft Service
                          Enables discovery of UPnP devices on your home network.
Description
Dependencies              HTTP

                       Remember, a UPnP device is external (not inside the computer case) and
Real World Description a part of the local network. For more info on UPnP, click here. They are
                       not the same thing as PnP devices.
Is this service needed?         Possibly           Recommended Setting:                Disabled
Note                      Updated to reflect SP2 changes.


                               System Event Notification Service


Service Name              SENS                      Process Name               svchost.exe -k netsvcs
Default Settings            XP Home : Automatic                      XP Pro : Automatic
Microsoft Service         Tracks system events such as Windows logon, network, and power
Description               events. Notifies COM+ Event System subscribers of these events.
Dependencies              COM+ Event System
                       Whether your system actually has need for this depends on what you
Real World Description have installed, but many applications have processes that are run
                       through System Event Notification. Best to leave it on Automatic.
Is this service needed?         Possibly           Recommended Setting:               Automatic
Note                      Updated to reflect SP2 changes.


                                      System Restore Service


Service Name              srservice                 Process Name               svchost.exe -k netsvcs
Default Settings            XP Home : Automatic                      XP Pro : Automatic
Microsoft Service         Performs system restore functions. To stop service, turn off System
Description               Restore from the System Restore tab in My Computer->Properties
Dependencies              Remote Procedure Call (RPC)
                          Allows you to take a snapshot of your system and then roll it back to
Real World Description
                          that particular point in time.
Is this service needed?         Possibly           Recommended Setting:               Automatic
                          Updated to reflect SP2 changes.
                          I'll take some heat for this, but I like this service. I hear about it being a
                          resource hog, not needed because of XP's stability, and on and on, but
Note
                          it's cheap insurance when configured properly and great for less
                          experienced users or ones who aren't overly discriminating about what
                          they download.
                                      Task Scheduler Service


Service Name              Schedule                  Process Name              svchost.exe -k netsvcs
Default Settings            XP Home : Automatic                    XP Pro : Automatic
                          Enables a user to configure and schedule automated tasks on this
Microsoft Service         computer. If this service is stopped, these tasks will not be run at their
Description               scheduled times. If this service is disabled, any services that explicitly
                          depend on it will fail to start.
Dependencies              Remote Procedure Call (RPC)
                       I just think of this as an aid to my memory as I get older and more
                       forgetful. It's used in conjunction with programs that like to run on a
Real World Description schedule, such as virus scanners, backups, defrag utilities, etc. If you
                       can remember every task that needs to be done without help, disable
                       this service.
Is this service needed?         Possibly           Recommended Setting:             Automatic
Note                      Updated to reflect SP2 changes.


                                 TCP/IP NetBIOS Helper Service

                                                                             svchost.exe -k
Service Name              LmHosts                   Process Name
                                                                             LocalService
Default Settings            XP Home : Automatic                    XP Pro : Automatic
Microsoft Service         Enables support for NetBIOS over TCP/IP (NetBT) service and NetBIOS
Description               name resolution.
                          AFD Networking Support
Dependencies                                                     Net BT
                          Environment
                          Rather a relic from the days when NetBIOS and WINS were an integral
Real World Description
                          part of the network, but this service is seldom needed today.
Is this service needed?         Possibly           Recommended Setting:               Manual
Note                      Updated to reflect SP2 changes.


                                         Telephony Service


Service Name              TapiSrv                   Process Name              svchost.exe -k netsvcs
Default Settings            XP Home : Manual                       XP Pro : Manual
                          Provides Telephony API (TAPI) support for programs that control
Microsoft Service
                          telephony devices and IP based voice connections on the local computer
Description
                          and, through the LAN, on servers that are also running the service.
Dependencies              Remote Procedure Call (RPC)            Plug and Play
Real World Description Basically controls all dialup activity and in some cases DSL/Cable activity.
Is this service needed?         Possibly           Recommended Setting:               Manual
Note                      Updated to reflect SP2 changes.
                                           Telnet Service


Service Name              TlntSvr                   Process Name              tlntsvr.exe
Default Settings            XP Home : Not Available                XP Pro : Manual
                                                                   XP Pro w/SP2 : Disabled

                          Enables a remote user to log on to this computer and run programs, and
                          supports various TCP/IP Telnet clients, including UNIX-based and
Microsoft Service
                          Windows-based computers. If this service is stopped, remote user access
Description
                          to programs might be unavailable. If this service is disabled, any services
                          that explicitly depend on it will fail to start.
Dependencies              NT LM Security Support Provider
Dependencies              Remote Procedure Call (RPC)            TCP/IP Protocol Driver
                       A remote login 'feature' that is a major security hole. Unless you have a
Real World Description specific reason to use this, keep it disabled. Even Microsoft has changed
                       the default to Disabled with the release of SP2.
Is this service needed?             No             Recommended Setting:              Disabled
Note                      Updated to reflect SP2 changes.




                                    Terminal Services Service

                                                                              svchost -k
Service Name              TermService               Process Name
                                                                              DComLaunch
Default Settings            XP Home : Manual                       XP Pro : Manual
                          Allows multiple users to be connected interactively to a machine as well
Microsoft Service         as the display of desktops and applications to remote computers. The
Description               underpinning of Remote Desktop (including RD for Administrators), Fast
                          User Switching, Remote Assistance, and Terminal Server.
Dependencies              Remote Procedure Call (RPC)
                          If you use any of the services listed in the description above, set this to
Real World Description
                          manual. If not, disabled is the way to go.
Is this service needed?         Possibly           Recommended Setting:               Manual
Note                      Updated to reflect SP2 changes.
                                           Themes Service


Service Name              Themes                    Process Name             svchost.exe -k netsvcs
Default Settings            XP Home : Automatic                    XP Pro : Manual
                                                                   XP Pro w/SP2 : Automatic
Microsoft Service
                          Provides user experience theme management.
Description
Dependencies
                          If you like the themes in XP, this makes them available. Setting this to
Real World Description
                          Automatic allows all users to access themes if they wish.
Is this service needed?         Possibly           Recommended Setting:              Manual
                          Updated to reflect SP2 changes.
Note
                          It's beyond me why this was changed to Automatic in SP2. Anyone have any
                          ideas?




                             Uninterruptible Power Supply Service


Service Name              UPS                       Process Name             ups.exe
Default Settings            XP Home : Manual                       XP Pro : Manual
Microsoft Service         Manages an uninterruptible power supply (UPS) connected to the
Description               computer.
Dependencies
                       Just what it says above. How your UPS connects to the computer really
Real World Description determines whether this is needed. Many USB connected UPS's don't
                       need this service.
Is this service needed?         Possibly           Recommended Setting:              Manual
                          Updated to reflect SP2 changes.
Note
                          If you don't have a UPS, get one. Prices are cheaper than ever and they
                          afford great system and data protection.
                          Universal Plug and Play Device Host Service

                                                                            svchost.exe -k
Service Name              upnphost                  Process Name
                                                                            LocalService
Default Settings            XP Home : Manual                       XP Pro : Manual
Microsoft Service
                          Provides support to host Universal Plug and Play devices.
Description
Dependencies              HTTP                                  SSDP Discovery Service
                       Remember, a UPnP device is external (not inside the computer case) and
Real World Description a part of the local network. For more info on UPnP, click here. They are
                       not the same thing as PnP devices.
Is this service needed?         Possibly           Recommended Setting:               Manual
Note                      Updated to reflect SP2 changes.


                                     Upload Manager Service


Service Name              uploadmgr                 Process Name            svchost.exe
Default Settings            XP Home : Automatic                    XP Pro : Automatic
                          Manages synchronous and asynchronous file transfers between clients
                          and servers on the network. If this service is stopped, synchronous and
Microsoft Service
                          asynchronous file transfers between clients and servers on the network
Description
                          will not occur. If this service is disabled, any services that explicitly
                          depend on it will fail to start.
Dependencies              Remote Procedure Call (RPC)

Real World Description
Is this service needed?         Possibly           Recommended Setting:            Disabled
Note


                                  Volume Shadow Copy Service


Service Name              VSS                       Process Name            vssvc.exe
Default Settings            XP Home : Manual                       XP Pro : Manual
                          Manages and implements Volume Shadow Copies used for backup and
Microsoft Service         other purposes. If this service is stopped, shadow copies will be
Description               unavailable for backup and the backup may fail. If this service is
                          disabled, any services that explicitly depend on it will fail to start.
Dependencies              Remote Procedure Call (RPC)
                       Related to using the Microsoft Backup Utility. If you use it, you might
Real World Description want to set this to Manual, but otherwise --- Should have the same
                       setting as MS Software Shadow Copy Provider
Is this service needed?            No              Recommended Setting:            Disabled
Note                      Updated to reflect SP2 changes.
                                        WebClient Service

                                                                               svchost.exe -k
Service Name              WebClient                 Process Name
                                                                               LocalService
Default Settings            XP Home : Automatic                     XP Pro : Automatic
                          Enables Windows-based programs to create, access, and modify
Microsoft Service         Internet-based files. If this service is stopped, these functions will not be
Description               available. If this service is disabled, any services that explicitly depend
                          on it will fail to start.
Dependencies              WebDav Client Redirector
                       Truthfully, I haven't been able to locate anyone that can tell me whether
Real World Description this service is needed or not. I've had it Disabled, Manual, and Automatic
                       with no conclusive evidence. It's a crapshoot.
Is this service needed?         Possibly           Recommended Setting:                Manual
Note                      Updated to reflect SP2 changes.




                                     Windows Audio Service


Service Name              AudioSrv                  Process Name               svchost.exe -k netsvcs
Default Settings            XP Home : Automatic                     XP Pro : Automatic
                          Manages audio devices for Windows-based programs. If this service is
Microsoft Service         stopped, audio devices and effects will not function properly. If this
Description               service is disabled, any services that explicitly depend on it will fail to
                          start.
Dependencies              Plug and Play                           Remote Procedure Call (RPC)
Real World Description Controls all audio functions. If you don't have sound capability, disable.
Is this service needed?         Possibly           Recommended Setting:              Automatic
Note                      Updated to reflect SP2 changes.
                          Windows Firewall/Internet Connection Sharing (ICS)


Service Name               SharedAccess                Process Name                 svchost.exe -k netsvcs
Default Settings             XP Home : Not Available                    XP Pro : Not Available
                                                                       XP Pro w/SP2 : Automatic

Microsoft Service          Provides network address translation, addressing, name resolution and/or
Description                intrusion prevention services for a home or small office network.
Dependencies               Network Connections
                                                                      Event Log / Remote Procedure Call
Dependencies               Windows Management Instrumentation
                                                                      (RPC)
                       Leave this on Automatic even if you're running a third-party firewall - and if
                       you aren't running one, stop what you're doing right now, turn off the machine
Real World Description
                       and don't start it up again until you have one installed and running. Yes, it's that
                       important.
Is this service needed?             Yes              Recommended Setting:                  Automatic
Note                       Updated to reflect SP2 changes. Available after installation of SP2.




                           Windows Image Acquisition (WIA) Service


Service Name               stisvc                      Process Name                 svchost.exe -k imgsvc
Default Settings             XP Home : Manual                           XP Pro : Manual
Microsoft Service
                           Provides image acquisition services for scanners and cameras.
Description
Dependencies               Remote Procedure Call (RPC)
Real World Description Controls web cams, cameras, and scanners.
Is this service needed?          Possibly            Recommended Setting:                    Manual
Note                       Updated to reflect SP2 changes.



                                     Windows Installer Service


Service Name               MSIServer                   Process Name                 msiexec.exe /V
Default Settings             XP Home : Manual                           XP Pro : Manual
                           Adds, modifies, and removes applications provided as a Windows Installer
Microsoft Service
                           (*.msi) package. If this service is disabled, any services that explicitly depend
Description                on it will fail to start.
Dependencies               Remote Procedure Call (RPC)
Real World Description Used to install applications that use .msi installation files.
Is this service needed?          Possibly            Recommended Setting:                    Manual
Note                       Updated to reflect SP2 changes.
                       Windows Management Instrumentation Service


Service Name              Winmgmt                   Process Name              svchost.exe -k netsvcs
Default Settings            XP Home : Automatic                     XP Pro : Automatic
                          Provides a common interface and object model to access management
                          information about operating system, devices, applications and services.
Microsoft Service
                          If this service is stopped, most Windows-based software will not function
Description
                          properly. If this service is disabled, any services that explicitly depend on
                          it will fail to start.
Dependencies              Event Log                              Remote procedure Call (RPC)
Real World Description If you don't want your computer to work, set this to Disabled.
Is this service needed?           Yes !            Recommended Setting:              Automatic
                          Updated to reflect SP2 changes.
Note
                          See Q305992 regarding WMI and System Restore



                   Windows Management Instrumentation Driver Extensions


Service Name              Wmi                       Process Name              svchost.exe -k netsvcs
Default Settings            XP Home : Not Available                 XP Pro : Manual
Microsoft Service
                          Provides systems management information to and from drivers.
Description
Dependencies
                          As it states above, but I don't understand why it isn't available in XP
Real World Description
                          Home. Can anyone answer that for me?
Is this service needed?            Yes             Recommended Setting:               Manual
Note                      Updated to reflect SP2 changes.



                                      Windows Time Service


Service Name              W32Time                   Process Name              svchost.exe -k netsvcs
Default Settings            XP Home : Automatic                     XP Pro : Automatic
                          Maintains date and time synchronization on all clients and servers in the
Microsoft Service         network. If this service is stopped, date and time synchronization will be
Description               unavailable. If this service is disabled, any services that explicitly depend
                          on it will fail to start.
Dependencies
                          If you like to synchronize your clock to a time server this is the way to
Real World Description
                          go.
Is this service needed?         Possibly           Recommended Setting:               Disabled
Note                      Updated to reflect SP2 changes.
                              Wireless Zero Configuration Service


Service Name              WZCSVC                    Process Name              svchost.exe -k netsvcs
Default Settings            XP Home : Automatic                     XP Pro : Automatic
Microsoft Service
                          Provides automatic configuration for the 802.11 adapters
Description
Dependencies              NDIS Usermode I/O Protocol              Remote Procedure Call (RPC)
                          Auto configuration for wireless network devices. No wireless devices?
Real World Description
                          Disable the service.
Is this service needed?         Possibly           Recommended Setting:               Disabled
Note                      Updated to reflect SP2 changes.




                              WMI Performance Adapter Service


Service Name              WmiApSrv                  Process Name              wmiapsrv.exe
Default Settings            XP Home : Manual                        XP Pro : Manual
Microsoft Service
                          Provides performance library information from WMI HiPerf providers.
Description
Dependencies              Remote Procedure Call (RPC)

Real World Description
Is this service needed?         Possibly           Recommended Setting:               Manual
Note                      Updated to reflect SP2 changes.




                                       Workstation Service


Service Name              lanmanworkstation         Process Name              svchost.exe -k netsvcs
Default Settings            XP Home : Automatic                     XP Pro : Automatic
                          Creates and maintains client network connections to remote servers. If
Microsoft Service         this service is stopped, these connections will be unavailable. If this
Description               service is disabled, any services that explicitly depend on it will fail to
                          start.
Dependencies
                       There are a number of items that can be impacted by disabling this service. I
                       strongly recommend you read through Microsoft Security Bulletin MS03-049 -
Real World Description Buffer Overrun in the Workstation Service Could Allow Code Execution
                       (828749), especially the " Workarounds" section, and then decide if you want it
                       enabled or disabled.
Is this service needed?         Possibly           Recommended Setting:              Automatic
Note                      Updated to reflect SP2 changes.

				
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