Anyone know how to fix windows error 0x80071a91 please?

Ringading

Hi,

My laptop is trying to update:

2025-01 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 23H2 for x64 (KB5049624)

and

2025-02 Cumulative Update Preview for Windows 11 Version 23H2 for x64-based Systems (KB5052094)

Both start to download, but then stop, and display the install error code: 0x80071a91

I've tried typing the following into the Command Prompt (Admin):

fsutil resource setautoreset true C:\

but that also comes up as an error :(

Does this mean that my laptop is actually at risk, or is BitDefender protecting it sufficiently?

Is this just Microsoft trying to mitigate their lack of support and software updates from Oct 2025, and trying to get me to buy another laptop?

Any advice welcomed!

Thanks

Victoria

Flexx

https://community.bitdefender.com/en/discussion/103361/anyone-know-how-to-fix-windows-error-0x80071a91-please

Understanding the Error Code 0x80071a91

The error code 0x80071a91 typically indicates a problem with the Transactional NTFS (TxF) resource manager. This component is responsible for managing file system transactions, ensuring data integrity during operations like updates. When it encounters an issue, updates can fail.

Fixing the Windows Update Error 0x80071a91

1. Open the Run command and execute the following commands one by one:

temp – delete all the files in the folder.

%temp% – delete all the files in the folder.

prefetch – delete all the files in the folder.

2. Check Disk for Errors

- Open Command Prompt (Admin).

- Type: chkdsk /f /r C: and press Enter.

- If prompted, type Y and press Enter to schedule the scan for the next restart.

- Restart your PC.

3. Run System File Checker (SFC) and DISM

- Open Command Prompt (Admin).

- Type: sfc /scannow and press Enter.

- Wait for it to complete.

- Then, type: DISM /Online /Cleanup-Image /RestoreHealth and press Enter (requires an internet connection).

- Wait for the process to finish.

4. Use Windows Update Troubleshooter

- Go to Settings > System > Troubleshoot > Other troubleshooters.

- Find and run the Windows Update troubleshooter.

5. Manually Reset Windows Update Components

- Open Command Prompt (Admin).

- Stop Windows Update services by running the following commands (one by one):

net stop wuauserv

net stop cryptSvc

net stop bits

net stop msiserver

- Rename update-related folders:

ren C:\Windows\SoftwareDistribution SoftwareDistribution.old

ren C:\Windows\System32\catroot2 catroot2.old

- Restart the services:

net start wuauserv

net start cryptSvc

net start bits

net start msiserver

If the issue persists, try downloading the standalone version of the Windows update for your KB numbers from the Microsoft Update Catalog. Below are the direct links for the specified KB updates.

https://www.catalog.update.microsoft.com/Search.aspx?q=KB5049624

https://www.catalog.update.microsoft.com/Search.aspx?q=KB5052094

If the issue persists, kindly contact Bitdefender support by visiting https://www.bitdefender.com/consumer/support/help/

Select, How to's & Troubleshooting Bitdefender products→Troubleshooting→I don't know→Contact Support→ You will get the option of chat, call or email.

To get immediate update, make use of the chat option. Bitdefender support may require logs and will assist you in generating them.

Also, ensure you do not have any ad-blocker or privacy-blocker extensions enabled, as they might prevent the chat window from appearing.

Regards

Ringading

Hi Flexx,

I just wanted to say thanks - your solution allowed one of the updates to install at least! 🤩

I now just have to figure out the issue with the other one 🙄 It's now giving me a different error code: 0x80248014…

If you have any further thoughts/advice on what that means, I'd be glad to hear about them…

Many thanks

Victoria

Ringading

Just to update from earlier…

I ended up speaking to a Microsoft engineer, who sorted the problem out for me. (It was not being blocked by BitDefender - it was something else entirely, and needed Windows 11 to be reinstalled.)

Anyway, thanks again Flexx - you can now relax (or at least go and save other people!) - I'm all updated!! 😉

Flexx

Since the issue has been resolved, this post is now closed to further comments.

Regards