Error Message 20147
The guest VM credentials are empty. As a result, Host-Based VM Backup cannot perform VM guest operations to configure the snapshot method from inside the VM. Please update the credentials via the console UI.
Symptom
Backup job couldn't configure snapshot method for the VM because VM guest OS credentials were not provided.
Solution
Make sure that you have updated the VM node with proper administrative credentials. For non-built-in administrator is used, make sure to you disable UAC inside VM. For details on how to disable UAC, refer to UDP Solution Guide.