Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I just installed Windows 8.1 Pro as an upgrade from an ISO torrent. I was able to activate my original Windows 8 key successfully. However, I tried to activate my Media Center Pack key that I purchased for Windows 8 and it errors out the first try. When I try to activate it again, it then says "This key won't work. Check it and try again, or try a different key.". Do I have to purchase the key again?


share|improve this question
Did you use a Generic license to do the upgrade. You really should have use the Windows Store in order apply the update. There is a solution but it requires your original Windows 8 Professional license key. – Ramhound Oct 20 '13 at 21:25
@Ramhound Yes, I used a generic license. I have my original Windows 8 Professional key. – Daniel Oct 20 '13 at 21:35
I posted and answer with the information you seek with RTM in the title. After you activate your Professional key again you have to upgrade to MC again – Ramhound Oct 21 '13 at 0:26

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.