ethernet adapter is already bound to the microsoft virtual switch protocol

hyper-v_logoWhen I was reinstalling one of my home lab server with Server 2012 (overdue for months now…) I can across the following error when I tried to configure my virtual switch.

external ethernet adapter is already bound to the microsoft virtual switch protocol

After a quick google search I came across a MS support article which described this error to a T.

You need to download the NVSPBind tool seperately from the MSDN website here. After opening the command prompt (in elavated administrator) I ran this command:

nvspbind /u Friendly NIC Name

When this was finished I was able to configure the virtual switch to connect to my external NIC.