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…


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.


Cause:

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.

Solution:

Install a hotfix for Veeam Backup & Replication 9.5 Update 4 (build 9.5.4.2615):

  • 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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Christopher GLEMOT

Data Protection & Governance Team Leader | Technical specialist around Data, Security, Backup, Disaster Recovery, Cloud, Virtualization and Storage | Veeam Vanguard 2016-19 & VMCE | Founder of ArmoricanCloud.com | Owner of original-network.com
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