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Title
Agent fails to snapshot with 'The provider returned an unexpected error code' -
Description
A protected machine fails to complete a snapshot. In the stack trace you see 'The provider returned an unexpected error code.'
Replay.Agent.Contracts.Transfer.TransferFailedException: The transfer failed: 'There was a problem with the VSS subsystem on 'AGENT_NAME'.' ---> System.AggregateException: One or more errors occurred. ---> Replay.Core.Contracts.Transfer.VssGeneralErrorException: There was a problem with the VSS subsystem on 'AGENT_NAME'. ---> Replay.Agent.Contracts.ShadowCopy.ShadowCopyException: Error snapping volumes ((Volume Labeled 'System Reserved');C:\): The provider returned an unexpected error code. ---> Replay.Common.Contracts.ReplayException: The provider returned an unexpected error code.
Running vshadow C: also returns the error - VSS_E_VOLUME_NOT_SUPPORTED
Which means no provider on this computer supports the requested operation on the volume. -
Cause
The Volume Shadow Copy Service is off and set to disabled. -
Resolution
Set the Volume Shadow Copy Service to 'Automatic' and start the service. The agent should complete a snapshot either at the next snapshot interval or forced. -
Defect ID
150575