How to set Auto-backup for OST file

It’s a known fact that all the items available in Exchange account mailbox will be saved on to an Offline Storage Table (OST) file. There are several drawbacks associated with this, in spite of the well-known advantages. For example, the OST file may become inaccessible. During such an instance, you will have to repair it. But, MS Outlook offers a built-in tool – Scanpst.exe which will be unable to fix such inaccessible OST file issues. Thus, you will have to back up data to avoid any kind of data loss issues. So, go through the below section to know more.

Note: To transfer the Offline Storage Table (OST) file from one system to another, first you have to convert it to PST file format, then import .pst file to Outlook. Check this article to migrate Outlook to new computer.

Method to auto back-up OST file on Windows

The MS Outlook application offers an option known as Auto Archive. This feature is useful to clear items and minimize mailbox capacity. But this feature can also be used to take OST file backups. In case you want to use Auto Archive options, you can proceed with any one approach given below,

  • Approach 1: Customize Auto Archive for folders. To do so, simply right click on any folders that are available in the OST file and then select Properties. After that, a new pop-up will appear. Here, navigate to Auto Archive tab and then customize the settings as required
  • Approach 2: Another alternative way is to set the OST file as the default Outlook file. To do this, click on File–> Options–>Advanced. Thereafter, click on Auto Archive Settings Then, change the settings according to your wish

On performing the above-given technique, you can easily take back up of the .ost file on your Windows computer.