The Offline Outlook Data File (OST file) of Outlook allows uses to work in the offline mode (Cached Exchange Mode) when the Exchange Server is down.
The default location of an OST file is –
But sometimes it becomes necessary to move the OST file to another location to free the space in the C Drive. Here, will discuss how you can do this in different Outlook versions with the help of Group Policy.
You can change the location of an Outlook 2010 OST file to a Network Shared folder using a GPO.
Before starting the procedure, you need to download and install the Group Policy Administrative Template Files from the following location –
The tool involves a ‘\Admin’ folder and various ADMX, ADML, and ADM versions of Office 365 Administrative Template files. After downloading the file, go to AMDX folder in C drive in Exchange Server 2012 R2 and copy the downloaded setup file here. Extract the file, and it will install automatically. Now follow the below steps:
There are many Outlook related settings you can change using Group Policy. Some of them are mentioned here:
It enables the email messages from Outlook to synchronize locally by the date of the message. By default, Outlook synchronizes messages from the previous 12 months only. If you want to get rid of this limitation, then you can select the settings and click All from the list.
It turns off the Download Full Items option for Outlook.
It turns off the Download Header option in Outlook.
It turns off the Download Headers then Full Items in Outlook.
It turns off the On Slow Connections Download Only Headers option in Outlook.
It synchronizes Public Folder Favorites in Cached Exchange Mode.
It synchronizes shared non-mail folders in the Cached Exchange Mode.
It configures new and existing Outlook profiles to add in the Cached Exchange Mode.
Group Policy Settings can be used to modify various settings of the Outlook application. But, changing the location of the OST file to a network or shared location is not a good idea as it can sometimes corrupt the file or make it inaccessible. In such cases, you need to have a recovery plan for the OST file. Either you can use the scanpst application or go to professional help. Scanpst has a limitation that it is not suitable for severely corrupt files and it is also unable to recover the deleted item. So, a professional OST to PST conversion tool seems a viable option. Kernel for OST to PST Converter is an easy to use tool which can access an unlimited number of OST files and recover them. After retrieving the OST files, you can change the location of OST file in Outlook.