Error E12520

The volume shadow service infrastructure is not operating properly. Check that the Event Service and VSS have been started, and check for errors associated with those services in the event log.

Module

VSS Error Messages

Reason:

This is an internal Microsoft Volume Shadow Copy Service error.

Action:

• Make sure that the Event Service and VSS have been started and retry the operation.
• Check the Activity Log and the Windows Event Log for additional information.