Backup of a virtual machine fails on Hyper V fails with the mentioned error when Hyper V is clustered.
Backup Job Log shows:-
Completed status: Failed
This issue occurs if:
Backup Exec Remote Agent for Windows Systems (RAWS) is not installed on a guest virtual machine and Granualar Recovery Technology(GRT) options is selected in the backup job properties.
Credentials used for backup job are invalid or do not have permission.
1. Make sure RAWS is installed on the guest virtual machine.
2. Use correct credentials for the backup job.
3. In case virtual machine is an Exchange server, please refer to the articles in the related articles section.
Windows Server 2008
Windows Server 2003