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

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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  1. Anonymous
    2020-10-14T09:54:28+00:00

    Thanks for sharing. Chatbot just repeated all stuff already known in this thread. Did not try to get a human on the phone yet... 

    Stories about this not even being solved by a clean install or worse resulting in a broken windows makes me stick to the current working system without updates.

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  2. Anonymous
    2020-10-14T08:52:08+00:00

    Based on my understanding. It seems to me that we have to wait until the 20H2 update is released or go for the media creation tool to solve it (which is not fully guaranteed that this method can entirely eliminate the problem).

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  3. Anonymous
    2020-10-14T07:08:56+00:00

    Yeah...did that too a few days back. In fact, tried all possible options:

    1. Tried the "Help" link available in Windows Update section. It connects you to a "Virtual Assistant" (chatbot), which keeps throwing some or the other random steps to perform. They are very time consuming, and even after you follow its instructions for hours in performing those steps, nothing works. 

    After that, it tells you that "You can now get connected to a personal support", and then it connects you to a QUEUE where you wait with false hope that some human will help you. 

    What actually happens is that you keep waiting on that chat window, a person does appear with a welcome message advising you not to share any personal info, but then they instantly disappear. You are left with no choice.

    Tried that for 3 days, got connected to two different persons on first two days who disappear after posting their welcome message. On the third day, another person waited for some time after posting welcome message, and then disappeared after saying "We are sorry, we have some system issues"

    1. Call up their phone helpline. You are made to wait for long duration, and then either you get frustrated and disconnect on your own, or even after long wait you are told to visit such forums and refer to advice available here.

    Chapter closed!

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  4. Anonymous
    2020-10-14T06:55:37+00:00

    KB4579311 is failed too.

    Sad.

    What a great opportunity Microsoft is now creating for the Microsoft Support fishing gang. Calling any random Windows user offering remote support for solving Windows update issues is a walk in the park with the result of hacking your PC or installing a Trojan. 

    Speaking of collateral damage! 

    Anyone tried calling real Microsoft Support?

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  5. Anonymous
    2020-10-14T06:31:01+00:00

    KB4579311 is failed too.

    Sad.

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