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.

Welcome to the club, There was a similar issue in August with kb4566782, so I postponed updates until September patch Tuesday. When I restarted updates at that time kb4566782 was nowhere to see, KB4576478 installed ok but kb4571756 now failed in exact the same way as kb4566782. Meanwhile I learned about the Microsoft wushowhide tool to temporarily hide updates. When running windows update today I get the red text notice "Your device is missing important security and quality fixes" no kidding ! So hiding an update is equally useless as postponing updates. I surely hope Microsoft gets this mess fixed on October 13. No way I am considering clean, repair or update install. Linux is becoming more and more attractive.

My recommendation would be: If your ISP imposes data caps and you do not want to sit and download an ISO right now, wait for the next major update (20H2). If the September patch DOES NOT install, then the October patch DEFINETLY WON'T. If you don't have any data caps, download the media creation tool and perform an in-place upgrade (make sure the setup installs all the latest CUs that are available before beginning the in-place upgrade).

Thanks Admin976 My ISP has data caps. However, I downloaded the media creation tool yesterday (around 20 hrs ago), and have created the ISO file. Will that ISO be good to use for in-place upgrade? If so, do we have a step-by-step guide to "make sure the setup installs all the latest CUs that are available before beginning the in-place upgrade"?? Many Thanks!

If you already have a downloaded ISO then you needn't worry about the download taking up your precious internet plan. Just open the ISO, run setup.exe, make sure you enable it to check for updates before installing and you're good to go (of course, don't forget to choose the option which says "Keep my data and apps").

Thanks Admin976 My ISP has data caps. However, I downloaded the media creation tool yesterday (around 20 hrs ago), and have created the ISO file. Will that ISO be good to use for in-place upgrade? If so, do we have a step-by-step guide to "make sure the setup installs all the latest CUs that are available before beginning the in-place upgrade"?? Many Thanks! That is sufficient. Make sure to select the checkbox "Download and Install the latest updates" when prompted. It shouldn't take more than 500MB data AFAIK.

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

Anonymous

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.

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.

0 comments

217 answers

Anonymous

2020-10-11T09:15:33+00:00

Welcome to the club,

There was a similar issue in August with kb4566782, so I postponed updates until September patch Tuesday. When I restarted updates at that time kb4566782 was nowhere to see, KB4576478 installed ok but kb4571756 now failed in exact the same way as kb4566782.

Meanwhile I learned about the Microsoft wushowhide tool to temporarily hide updates.

When running windows update today I get the red text notice "Your device is missing important security and quality fixes" no kidding !

So hiding an update is equally useless as postponing updates.

I surely hope Microsoft gets this mess fixed on October 13.

No way I am considering clean, repair or update install.

Linux is becoming more and more attractive.
Was this answer helpful?

0 comments No comments
Anonymous

2020-10-11T09:41:43+00:00

My recommendation would be:

If your ISP imposes data caps and you do not want to sit and download an ISO right now, wait for the next major update (20H2). If the September patch DOES NOT install, then the October patch DEFINETLY WON'T.

If you don't have any data caps, download the media creation tool and perform an in-place upgrade (make sure the setup installs all the latest CUs that are available before beginning the in-place upgrade).
Was this answer helpful?

0 comments No comments
Anonymous

2020-10-11T10:17:21+00:00

Thanks Admin976

My ISP has data caps.

However, I downloaded the media creation tool yesterday (around 20 hrs ago), and have created the ISO file. Will that ISO be good to use for in-place upgrade?

If so, do we have a step-by-step guide to "make sure the setup installs all the latest CUs that are available before beginning the in-place upgrade"??

Many Thanks!
Was this answer helpful?

0 comments No comments
Anonymous

2020-10-11T10:44:42+00:00

If you already have a downloaded ISO then you needn't worry about the download taking up your precious internet plan. Just open the ISO, run setup.exe, make sure you enable it to check for updates before installing and you're good to go (of course, don't forget to choose the option which says "Keep my data and apps").
Was this answer helpful?

0 comments No comments
Sumit 44,306 Reputation points Volunteer Moderator

2020-10-11T11:10:57+00:00

Thanks Admin976

My ISP has data caps.

However, I downloaded the media creation tool yesterday (around 20 hrs ago), and have created the ISO file. Will that ISO be good to use for in-place upgrade?

If so, do we have a step-by-step guide to "make sure the setup installs all the latest CUs that are available before beginning the in-place upgrade"??

Many Thanks!

That is sufficient. Make sure to select the checkbox "Download and Install the latest updates" when prompted. It shouldn't take more than 500MB data AFAIK.
Was this answer helpful?

0 comments No comments