Live Migration Error: Failed To Access Disk During Move Operation

If you get an error like this on Windows Server 2012 Hyper-V:
image_2_2059995A
There was an error during move operation. Virtual machine operation failed at migration destination. Failed to access disk. The system cannot find the path specified.

For me this happened because I was using a differencing disk. The actual disk was called out in the error or I might not have caught it. In many cases, you’d be advised to do an export/import. This would obviously cause you to need to bring the VM offline. I was able to overcome this by copying the base of the differencing disk into the same location where I was live migrating:

image_4_2059995A

This resolved the error.

It should be noted that it is still not a good idea to use differencing disks in production. Handy as they are for lab environments.

Leave a Reply