upgrade from 10 to 11 pro

Aljawad Company 0 Reputation points
2026-11-14T08:47:51.39+00:00

I purchased Windows 10/11 Pro directly from Microsoft on September 14, 2026. My Microsoft Order History confirms the purchase.

After resetting my computer, Windows 11 Enterprise was installed instead of Windows 11 Pro.

Windows activation now fails with error 0xC004C003.

I have a digital license linked to my Microsoft account, but no product key.

Please help me change Windows 11 Enterprise back to Windows 11 Pro and activate my purchased license, preferably without losing my files or applications.

Windows for home | Windows 11 | Licensing and activation
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  1. DaveM121 949.2K Reputation points Independent Advisor
    2026-11-14T09:19:43.9066667+00:00

    Hi, try using this process with the generic Pro key to downgrade from Windows 11 Enterprise to Pro.

    Important - disconnect totally from the Internet

    Open the Settings App (Gear icon on your Start Menu)

    Go to Update and Security - Activation

    Click Change Product key

    Enter this generic product key: VK7JG-NPHTM-C97JM-9MPGT-3V66T

    When prompted, click 'Activate Product'

    If the above does not work first time, restart your PC and try again.

    Note the generic key will cause Enterprise to downgrade to the Pro edition, then your own legal licence will activate automatically after you restart (not shut down) your PC

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