Windows 10: Cant sign in error code: 0x8007007f

Discus and support Cant sign in error code: 0x8007007f in Windows Hello & Lockscreen to solve the problem; Hello i just got a blue screen crash on my Huawei Matebook, then the disk checking appears and after that the system finally rebooted. But then after I... Discussion in 'Windows Hello & Lockscreen' started by Deysjsja, Jul 13, 2023.

  1. Deysjsja Win User

    Cant sign in error code: 0x8007007f


    Hello i just got a blue screen crash on my Huawei Matebook, then the disk checking appears and after that the system finally rebooted. But then after I input my password it said it is incorrect and an error pops up. I also tried using my fingerprint sensor to no avail. The error code is: 0x8007007f.

    :)
     
    Deysjsja, Jul 13, 2023
    #1

  2. download windows 11 Error code 0X8007007F

    I cannot download windows 11 error code 0X8007007F. Please help!
     
    Kevin E Allen, Jul 13, 2023
    #2
  3. windows 11 error installatiom code 0x8007007f what is this

    windows 11 error installation code 0x8007007f what does this mean
     
    james dean3, Jul 13, 2023
    #3
  4. jimhoyle Win User

    Cant sign in error code: 0x8007007f

    How to troubleshoot an error that appears only at Restart or Sign out?

    I get an error pop-up error message not every, but almost every time I Restart or Sign out. It's the screen with blue background and on top of Restart or Sign out text an error window says:

    Explorer.exe - Application error. The instruction at 0x000… referenced memory at 0x000... The memory could not be written.

    Sometimes the error code is just zeros, sometimes random numbers. I have tried so much already to troubleshoot this. For example these did not help in any way:
    • MemTest86+ (no problems)
    • Disabling any Services, Autoruns/ShellExView entries
    • Low resolution mode
    • BIOS settings are fine, no overclocking etc.
    • DISM.exe and sfc
    • etc.

    However, these do make the error go away:
    • End process for explorer.exe before Restart or Sign out
    • Safe Mode
    • Creating a new user profile (almost the same as clean installing Windows, many full days of work)
    • Uninstalling NVIDIA graphics driver (then the card is unusable, of course)
    • Disabling Device Manager / Display Adapters / NVIDIA GeForce GTX 1080

    I already contacted NVIDIA and the graphics driver is not the culprit. Something has gone wrong with the user profile as the same driver works just fine in a new profile (and there's nothing wrong with the driver anyway, it's just the Restart or Sign out process that has a problem).

    What can I do to fix this? One useful thing would be to have a step-by-step procedure for the Sign out. So that it'd ask before continuing to the next step and list what it's doing. Or if I could just disable whatever it does when the error appears.
     
    jimhoyle, Jul 13, 2023
    #4
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Cant sign in error code: 0x8007007f

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    Cant sign in error code: 0x8007007f: Hello i just got a blue screen crash on my Huawei Matebook, then the disk checking appears and after that the system finally rebooted. But then after I input my password it said it is incorrect and an error pops up. I also tried using my fingerprint sensor to no avail. The...
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