Windows 10: KB 5004257 failed to install - 0x80071a91

I appear to be stuck on 20H2 OS Build 19042.804. Auto-update keeps trying but always reports: KB 5004257 failed to install - 0x80071a91 ***I tried this Command Prompt sequence suggested in a reply on an older thread that seems to have grown 'cold.' 21 Feb 2021#4 Hello @ The error code 0x80071a91 means: Transaction support within the specified file system resource manager is not started or was shutdown due to an error. Please try the following: Press the Windows button, type cmd and then select the option "Run as administrator". In the Command prompt window execute the following commands one after the other: sc config trustedinstaller start=auto net start trustedinstaller fsutil resource setautoreset true%SystemDrive%\ attrib -r -s -h %SystemRoot%\System32\Config\TxR\* echo y |del%SystemRoot%\System32\Config\TxR\* attrib -r -s -h %SystemRoot%\System32\SMI\Store\Machine\* echo y |del%SystemRoot%\System32\SMI\Store\Machine\*.tm* echo y |del%SystemRoot%\System32\SMI\Store\Machine\*.blf echo y |del%SystemRoot%\System32\SMI\Store\Machine\*.regtrans-ms If you get an error message with "net start trustedinstaller" and "fsutil resource setautoreset true %SystemDrive%" write it in your answer. Microsoft Windows [Version 10.0.19042.804](c) 2020 Microsoft Corporation. All rights reserved.C:\WINDOWS\system32>sc config trustedinstaller start=auto[SC] ChangeServiceConfig SUCCESSC:\WINDOWS\system32>net start trusted installerThe service name is invalid.More help is available by typing NET HELPMSG 2185.C:\WINDOWS\system32>net start trustedinstallerThe Windows Modules Installer service is starting.The Windows Modules Installer service was started successfully.C:\WINDOWS\system32>fsutil resource set autoreset true %SystemDrive%\set is an invalid parameter.---- RESOURCE Commands Supported ----create Create a Secondary Transactional Resource Managerinfo Display information relating to a Transactional Resource ManagersetAutoReset Set whether a default Transactional Resource Manager will clean its transactional metadata on next mountsetAvailable Set a Transactional Resource Manager to prefer availability over consistencysetConsistent Set a Transactional Resource Manager to prefer consistency over availabilitysetLog Change characteristics of a running Transactional Resource Managerstart Start a Transactional Resource Managerstop Stop a Transactional Resource Manager The person who replied has not posted recently and does not answer a PM. I tried using the instructions in option 1 of this Tutorial: Read Windows Update Logs in Windows 10 | Tutorials (tenforums.com) When I tried to download "Get_Windows_Update_event_logs.bat" Windows Defender blocked the download 'because it could harm your device.' I lost patience and created this post. Do I need to download the most recent Win10 Pro iso, reformat my system disk, and reinstall it? Windows 10 reminds me of what I hate about my iPhone and the Apple way of highhandedly saying, this isn't how we do things on an Apple device.' Please encourage me that the experience will get better, soon. thanks

:)

 

KB4025339 Fails Install 0x80070564

Thanks
I am trying Eagle 51's suggestions now. Windows Update troubleshooter found a bunch of errors and fixed all but one.The update is trying to download KB4025339 again. I'll see what happens. At step one troubleshooter finishes with one error unresolved "Potential Windows Update Database Error Detected-Not Fixed". Windows update stalled at 0%.

At step 2 same troubleshooter error. The KB finished a new download failed to install.
Did step 3 KB has downloaded but fails to install.

If Eagle's suggestion doesn't work I'll try EdTittel's suggestion

Tried bothe Eagle & Ed 's suggestions - do not work. Anyone else?

I have noticed that the latest update for my nvidia drivers has failed to update. Wondering about that!

 

Windows 10 Home: Windows Update Error 0x80071a91

Hi ,

Thank you for posting in Microsoft Community, we appreciate your interest in Windows 10.

I understand the inconvenience caused to in installing the Windows Updates with error:
0x80071a91, we will help you with this issue.

Do let us know the outcome of SFC scan?

This issue might be due to the anti-virus software or corrupted Windows Update Components.

I suggest you to try the below and check with the status of this issue.

Method 1:

Step 1: I suggest you to uninstall the anti-virus software installed on your device and check for the updates.

If the issue still persists,

Step 2: I suggest you to
run the Windows Update troubleshooter and check.

Windows Update Troubleshooter resolves problems that prevents you from updating windows.

Steps:

• Press Windows key and type
  Troubleshooting.
• Click on Troubleshooting and click on
  View all in the left pane.
• Select Windows Update to run theWindows Update Troubleshooter
  and follow the on-screen instructions.

If the issue still persists then,

Method 2: I suggest you to try the steps mentioned in
Reset Windows Update components
and check if you are able to find the Windows Updates.

Registry disclaimer: Important this section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that
you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs.

Refer to the below article to backup and restore the registry in Windows:

http://support.microsoft.com/kb/322756/

Note: The above links applies to Windows 10 as well.

Hope it helps. Reply to the post with an updated status of this issue, we will be happy to assist you further.

 

• Cumulative Update for Windows 10 for x64-based Systems (KB3081444) - Error 0x80071a91

Hi Tom,

Thank you for posting your query on Microsoft Community.

Error 0x80071a91 occurs when your system is infected or the registry files
errors. Therefore, I would suggest you try the following steps and see if it helps:

Method 1:Reset Windows Update Components.

To reset windows update components refer the article provided in the link below:

https://support.microsoft.com/en-us/kb/971058

Method 2: Run System File checker

Follow the steps to run the System File Checker

• On the Search bar type “cmd” and click ctrl + shift + Enter to open the Elevated Command Prompt. (If prompted for a password, type the password and click Allow)
• Type “sfc /scannow” and hit Enter.
• Exit Command Prompt.

For more information about SFC Scan click on the link below:

https://support.microsoft.com/en-us/kb/929833

Hope this helps. Please respond if you have further related queries.

Regards,