

Now that the previous product key has been removed you can enter a new product key, so in the same command prompt box enter: slmgr -ipk xxxxx-xxxxx-xxxxx-xxxxx-xxxxx.You should then see a box titled "Windows Script Host" and containing the message "Uninstalled product key successfully." In the command prompt box enter: slmgr -upkĪnd press return.Run "Command Prompt" using "Run as administrator".Enter your server product key there, and you should then be able to activate windows from that dialog. A dialog box should now display titled "Windows Activation".This should bring up the search box and you should see "slui.exe 0x03" highlighted on the left in a box - click that box.Type " slui.exe 0x3" (without the quotes).Click the "Start" button until the Start screen is shown.There are two ways to enter (or change) the product key, use whichever you are most comfortable with: The solution is simply to enter a new or correct product key and try activating again.

Why a meaningful error couldn't be displayed or the option provided to change the product key, I don't know. On the Windows Activation screen it showed: In my case I had installed Windows 2012 server and had not yet entered a product key. Whilst this is not obvious, this is caused by having the wrong product key. Did you make sure your command-line is right? I guess your input arguments may have some thing wrong.
