How to Fix Hyper-V Backup Errors

When you encounter an issue with just one VM failing, it’s almost certainly an issue inside the VM, not the host.

That’s because any VSS-aware service inside a VM can break the Hyper-V backup cycle by vetoing. When all VMs fail to back up, it’s likely something on the host causing the failure.

Please check the Event Viewer logs inside the VM at the time when the first backup error occurred, for example 1/11/2017 5:05:00 PM.

The time window of interest would be 1/11/2017 5:05:00 PM to 5:10PM, sometimes longer. Now look for VSS related errors in the Event Viewer logs. It could be any VSS aware service vetoing live backup, such as Exchange, AD, etc.

To rule out the possibility of a host issue, you can also run VssDiag and enter the exact time from above (1/11/2017 5:05:00 PM) in US format

//backupchain.com/tools/VssDiag.zip

VssDiag will collect Event Viewer errors on the host as shown here: //backupchain.com/en/troubleshooting-volume-shadow-copy-errors-first-steps/

Of particular interest when you are dealing with Hyper-V are the logs in:

Applications and Services Logs -> Microsoft -> Windows -> Hyper-V XXXXXXX

as shown in the above article link.

Please contact our tech support for more information. We also offer remote assistance to get your backups running again asap.

Backup Software Overview

The Best Backup Software in 2024
Download BackupChain®

BackupChain is the all-in-one server backup software for:
Server Backup
Disk Image Backup
Drive Cloning and Disk Copy
VirtualBox Backup
VMware Backup
Image Backup
FTP Backup
Cloud Backup
File Server Backup
Virtual Machine Backup
Server Backup Solution

Hyper-V Backup

  • 18 Hyper-V Tips & Strategies You Need to Know
  • How to Back up Windows 10 Hyper-V VMs
  • Hyper-V Backup

    Popular

    Resources

    Other Backup How-To Guides