Error Detail:

Volume Shadow Copy Service error: Error creating the Shadow Copy Provider COM class with CLSID {79079d5c-ef20-4952-b9fc-cfd443b38641} [0x80040154, Class not registered
].

Operation:
Obtain a callable interface for this provider
List interfaces for all providers supporting this context
Get Shadow Copy Properties

Context:
Provider ID: {f782463b-33bb-4043-ad8d-60b728d26a6c}
Class ID: {79079d5c-ef20-4952-b9fc-cfd443b38641}
Snapshot Context: 25
Snapshot Context: 25
Execution Context: Coordinator

 

 

Resolution:

 

Navigate to following registry

HKEY LOCAL MACHINE\SYSTEM\CURRENT CONTROL SET\SERVICES\VSS\PROVIDERS

Check third party VSS writer and delete the writer which is not in used.

Eg. Acronics.

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