Failed to get the size of '\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy1629' - The system cannot find the file specified

Hi All,

A backup has been failing recently with the error:

•Failed to get the size of '\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy1629' - The system cannot find the file specified

I have looked up the knowledge base which recommends configuring the shadow copy to no limit for the specific drive.  I have had this issue before and the KB article solution normally works a charm, however, this particular backup is still failing despite setting the VSS Snapshot to no limit.

In this instance is there anything else I can attempt?

Thank You.

Parents
  • Basically that error simply means that the shadow copy that was being used during backup was deleted unexpectedly by Windows. If you look in the Windows System Event log for errors at the same time as the backup, there should be VSS errors with exact details as to why the shadow copy was deleted. Once you have that info you should better be able to diagnose what's happening. A lot of time the error is something to the effect of "the shadow copy storage could not grow in time" so setting it to no limit resolves that problem by allocating more than enough space for the shadow copy up front. In your case, since that didn't help, you are probably getting a different error. So find that error in the Windows System Event log and that will help a lot with finding the root cause of the problem.

Reply
  • Basically that error simply means that the shadow copy that was being used during backup was deleted unexpectedly by Windows. If you look in the Windows System Event log for errors at the same time as the backup, there should be VSS errors with exact details as to why the shadow copy was deleted. Once you have that info you should better be able to diagnose what's happening. A lot of time the error is something to the effect of "the shadow copy storage could not grow in time" so setting it to no limit resolves that problem by allocating more than enough space for the shadow copy up front. In your case, since that didn't help, you are probably getting a different error. So find that error in the Windows System Event log and that will help a lot with finding the root cause of the problem.

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