Cumulative update won't install (KB4571756) (Error 0x800f081f)

Anonymous
2020-09-11T07:31:06+00:00

I am running Windows 10 Home 2004 (Build 19041.450). Windows Update notified me that there was a cumulative update available to install (2020-09 Cumulative Update for Windows 10 Version 2004 for x64-based Systems (KB4571756)). When I told it to install the update, it will download and go up to "Installing - 100%" and then just show this error: 

I've tried the following in an attempt to fix the error:

  • Run "sfc /scannow" in an elevated command prompt
  • Run "DISM.exe /Online /Cleanup-Image /RestoreHealth /Source:<Source of clean Windows 10 2004 ISO created using Windows Media Creation Tool> /LimitAccess" in an elevated command prompt
  • Uninstall and reinstall NET framework 3.5 from "Turn Windows features on or off" in Control Panel
  • Manually download the specific update from the Microsoft Update Catalog and install it
  • Stop the Windows Update service and delete the Windows Update cache located in "%SystemRoot%\SoftwareDistrubution", then restart the service

Obviously, none of these worked so I'm looking for any other solutions to this problem. Any help is appreciated.

Windows for home | Windows 10 | Windows update

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  1. Anonymous
    2020-10-12T20:14:08+00:00

    I have gone as far as to completely wipe my entire PC and reinstall windows and I am still having the same issues. **(KB4571756)**simply will not install, and I have tried every method suggested. The update tools fail and roll back all changes and I am now plagued with BSODs

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  2. Anonymous
    2020-10-12T18:41:58+00:00

    I am facing the same issue and have been having this issue for over 2 months now. It fails everytime and ive tried everything.

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  3. Anonymous
    2020-10-12T14:26:20+00:00

    So I was having the same issue and solved it by doing an in-place upgrade with a USB drive created using the MediaCreationTool2004

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  4. Anonymous
    2020-10-11T13:57:54+00:00

    Thanks for a clear explanation; they're hard to find in this technological world.

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  5. Anonymous
    2020-10-11T13:50:36+00:00

    This is weird and the first case of the repair upgrade just failing. I'm afraid I can't help from here but others might be able to. Good luck.

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