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
    2020-09-16T08:57:02+00:00

    Man, i have lot of softwares installed and if i re-install windows fresh from Media creation tool, Every program installed will be wiped out. Is there really no other method to fix this issue?

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  2. Sumit 44,306 Reputation points Volunteer Moderator
    2020-09-16T09:22:28+00:00

    Man, i have lot of softwares installed and if i re-install windows fresh from Media creation tool, Every program installed will be wiped out. Is there really no other method to fix this issue? 

    If you choose Upgrade this PC now, everything would be kept.

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  3. Sumit 44,306 Reputation points Volunteer Moderator
    2020-09-16T09:23:02+00:00

    Nope update still won't install. Dropping a FBH report now.

    Here's the feedback link: https://aka.ms/AA9o8a9

    I also have the same issue.  Both last month and this month KB4571756 will not install.  It fails with a 0x800f081f error.  I have tried all of the fixes other then Windows reinstall.   https://aka.ms/AA9on8q

    Appreciate the same - both have been sent to the appropriate people.

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  4. Anonymous
    2020-09-16T09:33:06+00:00

    Okay, Thanks man. Will give it a try.

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  5. Anonymous
    2020-09-16T15:39:10+00:00

    i have the same problem.

    i used the steps as described.

    update seams to work properly: reaches 44% then 100% an then. error update not installed.

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