Tag Archives: VM

Hyper-V VM Stuck In Backing Up… State

In this post I’ll show how to resolve the issue of a VM that’s stuck in the “backing up…” state as shown by Hyper-V Manager, without having to reboot the virtual host.

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If a VM is stuck in the backing up… state it’s probably due to an error with the Microsoft Hyper-V VSS Writer.  Open an elevated command prompt and run “vssadmin list writers”.  The output should look like it does below, with no errors listed.

BackingUp1

 

The Microsoft Hyper-V VSS Writer runs within the Hyper-V Virtual Machine Management service, so in order to restart the VSS writer and clear the error, you have to restart the Hyper-V Virtual Machine Management service.  I’ve restarted this service without any issues, but please test this on a test server first.

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You can restart the service from the Services mmc, but if the Hyper-V VSS Writer is in an error state the service may hang on shutdown, in this case you’ll have to kill the vmms.exe process from Task Manager.

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When you do this VMs will disappear from Hyper-V Manager, but will reappear when you restart the Hyper-V Virtual Machine Management service.  Following the service restart the VM should no longer by in a backing up… state.

 

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