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.pst file backup while Microsoft Outlook is open.

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Is there any possibility where we can take backup of .pst file while outlook is open? 
I have did some R&D on this and found that we can take .pst file backup while outlook is open. but we have to install Microsoft File System Agent in workstation. please correct me if I am wrong and if there is possibility please guide me with the process.

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Nitin, welcome to these public User Forums.

See webpage: Introduction to Outlook Data Files (.pst and .ost) - for information on these Outlook data files.

Acronis can backup Outlook .pst files but if the Outlook application is open / active then it may hold locks on the .pst file and may have unsaved changes for the .pst file still held in memory that would not be included in the backup.

Ideally, it is best to close Outlook while the file is backed up then re-open Outlook when that operation has completed.