Trouble Activating Windows Server 2016
Clicking on “Change product key” does nothing
PROBLEM: Clicking on the “Change product key” option simply does nothing and you are unable to successfully activate your Windows Server 2016 server.
1) Click the Windows button in the lower left of your screen and type slui 3 as pictured below. Press enter or click the slui 3 icon towards the top.
2) You now are able to enter your product key
3) Enter your product key and click Next
4) Your server is now activated. Click Close.