Today I came across an error when enabling Hyper-V Live Migration on a node in my cluster (Hyper-V Server 2012)
It read: “Error applying Live Migration changes. Failed to modify service settings.”
After a bit of digging I found a solution. Strangely enough all I had to do was the following:
This was performed on a Hyper-V Server 2012 installation, but i presume this would be exactly the same for Server 2012 Core and Server 2012 GUI. With either PowerShell or a cmd.exe window do The following.
- Navigate to C:\Windows\System32\GroupPolicy\Machine on the server in question
- Delete the file “Registry.pol“
- Try to enable Live Migration again
After i deleted Registry.pol i was able to start the Live Migration service and migrate a VM. I wasn’t required to restart the server.
A picture of the error for your convenience