Error: VSS_E_FLUSH_WRITES_TIMEOUT

OS

Windows

Error message

VSS_E_FLUSH_WRITES_TIMEOUT
Volume Shadow Copy Error 0x80042313 - flush writes timeout

Cause

The 6.11.0.0 and higher software is completely depended on the VSS to make the backup of the Exchange 2010 instead of the temp folder used in older versions.
This particular VSS error is caused due to high disk activity.
High disk activity does not allow VSS to create a shadow copy in the default time period when a snapshot is being performed.

Solution

Perform the backups when the disk activity is less or rather put the computer in clean boot state and then perform the system restore to avoid third party applications meddling around.

Clean boot: http://support.microsoft.com/kb/929135