While building a lab environment in Hyper-V, the following error occurred when I tried to start a VM with a preconfigured VHD from the Microsoft website:
“Win2012-DC1” failed to start.
Microsoft Emulated IDE Controller (Instance ID x) Failed to Power on with Error ‘The version does not support this version of the file format’.
Failed to open attachment …
The solution is easy: make a copy of the VHD file, remove the original VHD from the VM and then attach the copy to the VM.