I moved a Windows Server 2008 R2 VM from one Windows Server 2008 R2 host to another. When I started up the VM everything seemed ok, but the network didn't work. It was showing up as an unknown device. I tried to installed the Hyper-V Integration Services.....but they just spun around and never did anything. I tried removing the network adapter and adding it again, no dice. I added a legacy network adapter. No dice. I extracted the files from the HyperVIntegrationServices6.1 cabinet fie and tried to install the drivers manually. No dice there either.
Manually installing the legacy network adapter won't work at all - won't find the device, driver, notta. If I manually install a driver for the regular (non legacy) network adapter I get "This device is not configured correctly."
Any idea what has happened or how I can fix this?