Windows 10: Why has my Windows 11 suddenly deactivated itself and troubleshooting does not work?

Discus and support Why has my Windows 11 suddenly deactivated itself and troubleshooting does not work? in Windows 10 Software and Apps to solve the problem; I've had my PC for over 1 year and a few days ago my Windows 11 suddenly deactivated itself and displays the water mark to Activate Windows. When I go... Discussion in 'Windows 10 Software and Apps' started by GinoCheng, May 22, 2025 at 4:27 AM.

  1. GINOCHENG
    GinoCheng Win User

    Why has my Windows 11 suddenly deactivated itself and troubleshooting does not work?


    I've had my PC for over 1 year and a few days ago my Windows 11 suddenly deactivated itself and displays the water mark to Activate Windows. When I go into the settings to trouble shoot it tells me "we weren't able to activate Windows on this device and asks me to purchase a genuine copy of Windows. I'm getting an error code 0x803FA067 or if I go and change product key and put in the key installed on my computer it shows error 0x803fa067I purchased my windows 11 from a proper PC store.I've ran all the command prompts found online such as slmgr /dlv and these other methods I found in the forum:

    :)
     
    GinoCheng, May 22, 2025 at 4:27 AM
    #1
  2. 21CS045
    21CS045 Win User

    windows 11 deactivated suddenly

    My windows 11 pro is deactivated suddenly and I am having trouble using apps on my pc. when i bought the device it had windows 10 running on it and it worked fine. This device came to me as a second hand product through a third party so I don't have any box or license attached with it. after buying the pc i moved to windows 11 from windows 10.At first I used to get notifications of "your windows license will expire soon, activate the windows" although the system always showed the active status whenever I checked, to get rid of this notification I followed a tutorial from internet here is the link for that "" but it didn't worked and now after one or two months later my windows got deactivated and when I activate or troubleshoot it shows error. I am mentioning the error code here "0xC004F074".
     
    21CS045, May 22, 2025 at 4:36 AM
    #2
  3. AMERICANPHARAOH
    AmericanPharaoh Win User
    Windows 10 infinite restart black screen


    The tutorials provided are just a list of troubleshooting steps. Use only the steps which apply to you.

    Since none of the troubleshooting steps here worked, I'd suggest you do a Clean install.

    John
     
    AmericanPharaoh, May 22, 2025 at 4:36 AM
    #3
  4. BRINK
    Brink Win User

    Why has my Windows 11 suddenly deactivated itself and troubleshooting does not work?

    MSFT acknowledges some Win10 Pro licenses being mistakenly deactivated

    Source: Microsoft acknowledges some Windows 10 Pro licenses being mistakenly deactivated - Neowin

    More:


    UPDATE: You can now run the Windows Activation troubleshooter to activate again.

    *Arrow Use Activation Troubleshooter in Windows 10 | Windows 10 Tutorials
     
    Brink, May 22, 2025 at 4:36 AM
    #4
Thema:

Why has my Windows 11 suddenly deactivated itself and troubleshooting does not work?

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