Volume License media needs activation just like any other install of Windows. If you haven’t setup a KMS server then you can use this command line tool to Activate your genuine copy of windows using the MAK key.
- Open up an Elevated Command Prompt (that means right-click, Run as Administrator on cmd.exe)
- Enter the following two commands, pressing the Enter key after each:
slmgr -ipk enter-the-mak-key-here-including-dashes
- You’re done.