Windows 10: Win 10 Activation failed (Error code: 0xC004C003)

Discus and support Win 10 Activation failed (Error code: 0xC004C003) in Windows 10 Updates and Activation to solve the problem; ok so I was going to do a clean install of windows 10 after I upgraded using the media creation tool you can see a post I made here I used the media... Discussion in 'Windows 10 Updates and Activation' started by MrOblivion, Jul 29, 2015.

  1. Win 10 Activation failed (Error code: 0xC004C003)


    ok so I was going to do a clean install of windows 10 after I upgraded using the media creation tool you can see a post I made here I used the media creation to put win 10 home on a usb then I went to install I skipped the product key part because I already activated when I upgraded from 7 after it finished everything looked fine but when I went to check my activation this is what I got
    Win 10 Activation failed (Error code: 0xC004C003) [​IMG]
    when I click error details
    it says: "The activation server determined the specific product key has been blocked. (Error code: 0xC004C003)

    :)
     
    MrOblivion, Jul 29, 2015
    #1
  2. DatLe1993 Win User

    I have problem with active win 10 when i update from win 7

    when I try active win 10 with code from from my win 7 laptop, I have this error "Error code: 0xC004C003" and I can not active win 10. please help me.
     
    DatLe1993, Jul 29, 2015
    #2
  3. pot toga Win User
    can't active after reinstall

    I had upgraded from win 7 license to win 10 (activated)

    I backup product key, formatted hard drive and reinstall win 10 with iso file downloaded from internet.

    after reinstall, window can't active with backup key, Error code: 0xC004C003
     
    pot toga, Jul 29, 2015
    #3
  4. BunnyJ New Member

    Win 10 Activation failed (Error code: 0xC004C003)

    I would guess it's a server overload.. just keep trying. When I upgraded yesterday I encountered the same issue but in a few hours I was able to activate.

    Jeff
     
    BunnyJ, Jul 29, 2015
    #4
  5. when you mean keep trying you mean like reboot or something or like just wait it out ?
     
    MrOblivion, Jul 29, 2015
    #5
  6. BunnyJ New Member
    No.. just try activating every so often.. maybe every hour or so. That's what I did.
     
    BunnyJ, Jul 29, 2015
    #6
  7. I just tired the slmgr.vbs /ato thing and a few seconds after it just tells me the server as decided to block my key.. I really hope I didn't screw myself over lol
     
    MrOblivion, Jul 29, 2015
    #7
  8. BunnyJ New Member

    Win 10 Activation failed (Error code: 0xC004C003)

    I would not use that and just activate it the "regular" way.
     
    BunnyJ, Jul 29, 2015
    #8
  9. Nait Win User
    Hi BunnyJ, may I ask you what is the regular way because I'm in the same situation, there isn't any activation button just Change product Key and go to Store button. I updated from windows 8.1 pro to windows 10 pro succesfully yesterday, i checked a few times it was activated, then i decided to do a clean install via USB drive with the Microsoft tool, but now I am finding this problem since yesterday evening.

    Any help would be appreciated.

    Thanks
     
  10. Juelz Win User
    this is how I got mine working tbh
     
    Juelz, Jul 29, 2015
    #10
  11. Nait Win User
    How did you do it? because i don't have any activation button, just Change Product Key and Go to Store buttons.

    Regards
     
  12. netuser78 Win User
    Same here.

    Win 10 Activation failed (Error code: 0xC004C003) [​IMG]
     
    netuser78, Jul 29, 2015
    #12
  13. Win 10 Activation failed (Error code: 0xC004C003)

    yep same exact problem I'm not sure if you did the upgrade before doing the clean install like me but I'm starting to get worried
     
    MrOblivion, Jul 29, 2015
    #13
  14. I'm considering getting windows 7 again and trying to upgrade again
     
    MrOblivion, Jul 29, 2015
    #14
  15. netuser78 Win User
    Yes, I upgraded from Windows 7 Home Premium via Windows Update. I am not going to do a clean install until the activation issue is resolved. I am surprised Microsoft has not said anything yet, since obviously a significant number of users are having the same or similar activation issues. I do not know why Microsoft does not allow using the previous Windows key to activate Windows 10, seems way easier.
     
    netuser78, Jul 29, 2015
    #15
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Win 10 Activation failed (Error code: 0xC004C003)

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