Windows 8 and 8.1 Forums


Unable to activate Windows 8 Pro (OEM) / Error 0xC004C003

  1. #1


    Posts : 1
    Windows 8

    Unable to activate Windows 8 Pro (OEM) / Error 0xC004C003


    I bought a new laptop (GIGABYTE P35K-CF2) a couple of days ago and have been struggling to activate it without making any progress. In contrast with other threads I have been reading on the forum, I am not trying to install a different OS version at all. I just need to activate the Windows 8 Professional that was pre-installed by default.

    I understand the current Microsoft approach is to embed the Windows Product Key in the motherboard (encrypted in the BIOS/UEFI) in order to minimize piracy, etc. I also understand this allows for the Windows installation to directly read such product key and activate it automatically. Well, for some reason this is not working on my brand new laptop.

    Allow me to explain in detail what has been happening during the last 24 hours:

    1) I noticed a pop-up window that required a new Windows key since the current product key was apparently blocked. Please notice that up to that point I didn't change anything regarding to Windows itself. In fact, I only installed a couple of programs, including an antivirus. Automatic updates were also turned off.
    ---
    The product key didn't work. Try a different key, or buy a new one.
    (...)
    Current edition
    Windows 8 Pro
    Current product key
    *****-QPBRC
    (...)
    Activation details
    Error Code:
    0xC004C003
    The activation server determined the specified product key has been blocked.
    ---

    2) I run a small program ( wpkey / Windows 8 Product Key Viewer) to check my current product key in order to confirm the previous information. I found out there were two keys associated with the system: The first one which was a generic Win 8 Pro key (DR38Q-GTNFD-WR3TR-VBXBV-QPBRC) and a second one identified as MSDM KEY. After some reading, I came to the initial conclusion that the generic key was used for installation purposes, while the second one (MSDM KEY) is in fact the product key stored in the BIOS/UEFI, which should activate the OS immediately after obtaining internet access.

    3) I googled a fraction of the MSDM KEY (which I am not including here for obvious reasons) and found no results associated with Windows or anything related, which led me to think I was on the right track. I proceeded to use it in the Windows Activation option 'Activate with a new key' but the results were the same:
    ---
    Error Code:
    0xC004C003
    The activation server determined the specified product key has been blocked.
    ---

    4) I applied a System Recovery to discard any software conflicts or hidden windows updates, but the output was the same. One thing to notice is that the generic key changed after the recovery procedure (XKY4K-2NRWR-8F6P2-448RF-CRYQH).

    So, I have two different scenarios in mind that may explain the problem: (i) The embedded product key corresponds to a Windows 8 version different than Pro, which implies a factory mistake; and (ii) Someone somehow managed to retrieve my embedded product key and release it online, forcing the Microsoft servers to block it. Of course, this last theory doesn't make that much sense since, as far as I know, it is not possible at the time to introduce a product key on a different computer.

    Any help would be much appreciated (:

      My System SpecsSystem Spec

  2. #2


    Trnava
    Posts : 683
    Win 8.1.1 Pro x64


    Try to use "slui 4" command. Windows 8.1 Activation Error: 0xC004C003
      My System SpecsSystem Spec

  3. #3


    Posts : 2,191
    Windows 8.1


    I bought a new laptop (GIGABYTE P35K-CF2) a couple of days ago
    I just need to activate the Windows 8 Professional that was pre-installed by default.
    I found out there were two keys associated with the system
    The first one which was a generic Win 8 Pro key (DR38Q-GTNFD-WR3TR-VBXBV-QPBRC) and a second one identified as MSDM KEY
    If the factory made a mistake, they should correct it.

    I would contact their support group immediately or take it back to your place of purchase.
      My System SpecsSystem Spec

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