How to fix error CLSID {463948d2-035d-4d1d-9bfc-473fece07dab} Access Denied

You may receive the following Volume Shadow Copy Service (VSS) error in your Event Viewer logs:

Volume Shadow Copy Service information: The COM Server with CLSID {463948d2-035d-4d1d-9bfc-473fece07dab} and name HWPRV cannot be started. [0x80070005, Access is denied.

 

and or this one:

Volume Shadow Copy Service error: Error creating the Shadow Copy Provider COM class with CLSID {463948d2-035d-4d1d-9bfc-473fece07dab} [0x80070005, Access is denied.

The reason for this is the iSCSI Target Storage Provider in Windows Server 2012 is installed and in an  unexpected state.

You need to uninstall the iscsi provider or use BackupChain’s strict option (Options tab, see locked file handling options)

 

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