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Scheduled Incremental or Full Backup Job Fails for Hyper-V VM

Symptom

Sometimes the scheduled incremental or full backup job fails for Hyper-V virtual machines and the following errors are displayed in the event viewer on Hyper-V host:

Solution 1

The resolution is to increase the RAM size on the Hyper-V server and then resubmit the backup job.

Solution 2

If the VSS writer inside the virtual machine does not work properly, then the backup job fails. To resolve the issue, check the event log of both Hyper-V host and the virtual machine. Check the VSS warnings and errors, and take appropriate actions.