This can be an infuriating error if you ever run into it, largely this post applies to Windows 7 (and equivalents) and above.
Running into the above error when trying to activate an installation of windows, especially if it’s a volume license/enterprise edition, can be mind boggling and not make any sense.
I recently got a new machine at work and installed our Enterprise edition of Windows 8. It turns out we don’t have the auto-activation file in our ISO so during the installation the appropriate key wasn’t used and activated properly.
Thankfully there is an easy way to get around this.
- Open Command Prompt (WIN+R, type “cmd”, ENTER)
- Type “slui.exe 0x3” and hit enter.
- This should open the Key entry GUI to allow you to enter your key and activate windows.
Hope this helps anyone who’s run into it!