How to open unmounted ost file- Article page Author Bio: The Company is known for its qualitative utility programs and these utility programs effectively solve many queries in different working areas worldwide. OST Recovery is one of the utility programs that impeccably solve the issue, ‘How to open unmounted OST file in Exchange Server’ (http://www.convertost.org/) Summary: You cannot open OST file when the Exchange Server is unmounted, you need to mount the Exchange Server to open OST file. If the process of unmounting remains unsuccessful then, you have to perform OST to PST conversion. You can use a third party tool to convert OST to PST file. Title: How to open unmounted OST file in Exchange Server? Body: Process of converting OST files to PST files is the solution for the issue, ‘How to open unmounted OST file in Exchange Server’. Offline Storage Table files of MS Outlook are the OST files and these files allow the users to work offline in the absence of Exchange Server and the changes made in offline mode gets synchronized later when the user connects with the Exchange Server. The function of working offline offered by OST file is perfect for those working environments in which network connectivity is limited or fluctuating. This situation is helpful in Server downtime situations as well. At times, when the Exchange Server is unmounted, you cannot open OST file and to open OST file in this situation, you need to mount the Exchange Server mailbox. You can easily open OST file if the mounting of Exchange Server mailbox becomes successful but, in case if it remains unsuccessful then, you need to perform OST to PST conversion. After OST to PST conversion you can easily open OST file as PST file and after opening OST as PST in Outlook, you can import PST file in Exchange Server and open it. If you don’t know, ‘How to open unmounted OST file in Exchange Server’ then, you can use a third party tool as OST to PST conversion is the solution for this issue. There are many third party tools to convert OST file to PST file but, SysTools OST Recovery software is an advanced tool as it not only converts OST file to PST file but, it can also convert OST to EML and MSG format. This tool converts OST file to PST file with all the components, sub folders and attachments and it retains exact fields and details of all the components of OST file during conversion. This utility program supports all the versions of Exchange.