Sunday, February 7, 2016

Hyper-V hangs on "Applying changes" when adding a new drive

While attempting to add a VHD as a hard drive to a Hyper-V virtual machine, I had to wait a very long time for the "Applying changes" dialog to go away. When it did, I was greeted with a generic failure message.

When I recreated the stuff in the VHD as a VHDX, however, it worked fine, and the progress dialog went away almost immediately. This is a Generation 2 VM, so it might be more strict about what sort of things it accepts. If that is the case, I wish the UI made such limitations more obvious. If it actually has to do with the machine being Generation 2, G2 might be more trouble than it's worth for me due to this and other surprises in the past.

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