Hi,

One of our NetWorker client backups recently began to fail with the following error:

5388:save: Failure status of writer Registry Writer - VSS_WS_FAILED_AT_PREPARE_SNAPSHOT

VSS OTHER: ERROR: VSS failed to process snapshot: The VSS writer operation failed because of an error that might recur if another shadow copy is created. ** Says to look on Event and Error help link. (VSS error 0x800423f4)

90108:save: Unable to save the SYSTEM STATE save sets: cannot create the snapshot.

94693:save: The backup of save set 'E:\' failed.

ctimgdbpsvr.ctigroup.com:E:\: retried 1 times.

We are running NetWorker v8.1 and the client OS is Windows Server 2003 SP2.

Any idea how to fix this?

Thanks,

Andrew