VSS on my Exchange 2010 server has been working well until last week when i've been getting a lot of these errors:
"Fail to acquire Security Audit privilege.
Security Audits for shadow copy creation and import will not be logged. 0x80070514, Not all privileges or groups referenced are assigned to the caller."
Consequently, my Windows Server Backup has been failing.
I've done some googling but not many of them i can understand.