Warning on Hyper-V Backup Copy Job after upgrade to Veeam B&R 9.5 U4

Veeam released a hotfix for Hyper-V Backup jobs failing with an error “Cannot find Hyper-V virtual machine group information on host…” after upgrade to Veeam B&R 9.5 Update 4…

Veeam Availability Suite 11

After installing Veeam Backup & Replication 9.5 Update 4, Hyper-V Backup backup without application-aware processing may fail with the error “Cannot find Hyper-V virtual machine group information on host…” or Backup Copy Job can also to be affected.


This issue is caused by the snapshot path in the VM ‘s configuration being different from the actual path on a file system in terms of symbols capitalization. You can confirm this by comparing paths in bold in the Task VM NAME VM UUID.log file.


Install a hotfix for Veeam Backup & Replication 9.5 Update 4 (build

  • Ensure that all jobs are in a stopped state.
  • Stop all services on the Veeam Backup server that begin with Veeam. (PowerShell: gsv Veeam* | spsv )
  • Navigate to the Veeam installation folder on the Veeam Backup Server (by default it is C:\Program Files\Veeam\Backup and Replication\Backup)
  • Rename the Veeam.Backup.Core.dll file to Veeam.Backup.Core.dll_backup
  • Replace the files listed in the previous step with those found in the hotfix package
  • Start Veeam services on Veeam Backup server. (PowerShell: gsv Veeam* | sasv )

Download the hotfix here.

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