Windows 2008 Server Activation Error 0xc004c003 RRS feed

  • Question

  • I have tried to activate my Windows Standard 2008 64 bit and gives this error 0xc004c003; Windows determined that this key is already in use. I was sent another Package with a different MAK and it does the same thing. You go to Properties and Change Windows Key to activate and it still does same thing. I need help urgently.
    Sunday, December 5, 2010 2:11 PM


All replies

  • Hi,


    This indicates the MAK is already in use or is blocked.


    Please contact Microsoft Activation Center for direct assistance.



    Tim Quan


    • Marked as answer by Tim Quan Friday, December 10, 2010 1:33 AM
    Tuesday, December 7, 2010 5:10 AM
  • To fix the problem, buy a product key for each one of your devices to activate Windows on them. If you're using Windows 10, you can buy Windows from the Microsoft Store: Select Start > Settings > Update & Security > Activation
    Friday, July 3, 2020 9:14 AM