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
    2020-09-30T19:10:25+00:00

    I get the same error when I try to update my PC.  I ran the utility setupdiag.exe.  The log file reports that the update is failing when it tries to load the file "C:$WINDOWS.~BT\DUImageSandbox\Microsoft-Windows-Printing-WFS-FoD-Package~31bf3856ad364e35~amd64~en-gb~.cab"

    I have an 64-bit Intel based PC, why is the update trying to load an amd64 file?

    I have tried all of the listed suggestions (sfc, dism...) and none of them worked.

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  2. Anonymous
    2020-09-29T11:07:09+00:00

    I have Windows 32-bit version of Windows 10 Pro with the same issue.  Mine is running inside a VM in parallels 16 on my Mac but this patch will not install.  I have tried all the same things and no luck. Like everyone else I guess we wait for the October patch!

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  3. Anonymous
    2020-09-29T07:21:35+00:00

    I have been struggling with the same error since weeks now, I sincerely hope windows resolves this issue soon.

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  4. Anonymous
    2020-09-26T20:30:08+00:00

    Not a solution , merely workaround until next patch Tuesday, hide the offending update until resolved.

    https://support.microsoft.com/en-us/help/3183922/how-to-temporarily-prevent-a-windows-update-from-reinstalling-in-windo

    Next patch tuesday is October 13th, just a heads up to everyone, pause updates till that day.

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  5. Anonymous
    2020-09-26T11:22:01+00:00

    worked on 2 of my 3 laptops, continues to fail on 1.  i have no idea what the difference is.

    Most interesting. I had the same results as you in that this update worked on two computers and this one, not so. 

    I did the In Place Repair and it fixed several ongoing issues I had but weirdly enough, this particular update was not and has not be included. Checking the update history, everything installed successfully and it shows I'm up to day after numerous checks. 

    It does appear the August update with this September update has got issues with certain computers and it's much like stepping into a bowl of oatmeal. Oh, by the way, don't try that. It makes a mess and causes a lot of disturbance in the home.

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