Volume Shadow Copy Service encountered an error during an operation.
Event source
Provider: VSS. The failed internal call and HRESULT in the complete event are more useful than the number alone.
Possible causes
- The named component could not access or initialize a required resource.
- An application writer or provider failed during the operation.
- A related service or backup dependency needs investigation.
Checks to perform
- Read the complete HRESULT, internal-call name and writer/provider details. Preserve the original event before changing services.
- Run vssadmin list writers and vssadmin list providers on the affected system.
- Compare nearby VSS, application and backup-job logs, including whether the job actually failed.
- Apply the supported remedy for the identified component, repeat the operation and compare the new events.
Commands
vssadmin list writersvssadmin list providersKey takeaways
A later healthy writer inventory does not establish its state during the original failure. Some documented 8193 scenarios do not disrupt normal operation; confirm the exact context before changing registry or COM+ permissions.