FIX: Windows Update Error 0x80071a91

Reports of users are growing about getting the error 0X80071a91 while running windows update. This can get very critical if there are critical updates pending leaving your computer outdated. Error 0x80071a91 directly translates to Transaction support within the specified file system resource manager is not started or was shutdown due to an error. This error is mainly attributed to the choking of the service named File System Resource Manager (FSRM), but there can be other causes to this error, which will be addressed in the following guide.

Solution 1: Reset FSRM

In this method, we will simply reset File System Resource Manager (FSRM), through command prompt.

To do that, press Windows key and type cmd. In the search results, right click on cmd, and choose Run as administrator. In the black command prompt window, type the following command and press Enter:

fsutil resource setautoreset true C:\

Where C: is the drive where your Windows is installed.

After the command runs successfully restart your system and run Windows updates now.

If you get the error again, then move on to the next method.

Solution 2: Deleting Common Log File System (CLFS) transaction logs

Common Log File System (CLFS) transaction logs when are in a corrupt state, they can cause Windows updates to cause this error. We will simply delete them and a fresh copy will be created by Windows again.

To do that, press Windows key and type cmd.

In the search results, right click on cmd, and press Run as administrator.

In the black command prompt window, type the following commands and press Enter after each command:

Press and hold Windows key and press R. In the run dialog, type %SystemRoot%\System32\SMI\Store\ and press Enter. Right click on the Machine folder and click Unlocker. If it is in use, then click Unlock All.

Now try the commands above to delete the files.

Restart your system at the end and check if the issue’s gone. If not, move to next solution.

Solution 3: Run Windows Update Troubleshooter

The troubleshooter will download and if you can Run/Open it then directly click Run/Open otherwise download and then run it.

Click Windows update in the troubleshooter window and click next.

It will automatically detect and fix errors it finds.

Restart your system and check if the error’s gone.

If not, move on to the next solution.

Solution 4: Restart Windows Update Services

BITS service, the Windows Update service, and the Cryptographic service are the services MSI Installer involved in Windows update. Anyone of them can be individually malfunctioning and can cause this error. But we will restart them all to remove any doubt. Click here to download the windowsupdateservices. bat file, right click on it and choose run as administrator.

Solution 5: Reregister Windows update files

In this step we will reregister the BITS files and the Windows Update files. Click here to download the windows reg update, right click on it and choose Run As Administrator.

Solution 6: Rename Corrupt Update Stores

Sometimes, previously failed updates can also trigger this error. It would be best to rename the old stores, so windows can re-attempt updates in a fresh/clean folder.

To do this, Press the Windows key to open Start (Search) and type cmd.

In the search results, right click on cmd, and choose Run As Administrator

In the black command prompt window, type the following commands and press Enter after each command:

FIX: Windows 10 error 0x80071a91

Windows 10 is one of the popular operating systems in the world today. However, just like every other OS, it also has its own myriads of issues. In this guide, we’re going to talk about error 0x80071a91 and how to fix it.

Windows 10 error 0x80071a91 is an error which occurs on mostly Windows 10 PC after recent upgrades from lower Windows versions such as Windows 7 and Windows 8.

Error 0x80071a91 prevents users from downloading and installing Windows updates. We could say that Windows 10 inherited this error code from Windows 8.1.

As we already reported in a previous post, error 0x80071a91 is one of the most frequent Windows 8.1 error codes.

Inability to install latest Windows patches expose Windows PC to latest threats and security exploits; hence, making this error problem a necessity to solve.

Corrupt system drivers, corrupt Windows OS installation, and Windows Updates issues are some of the factors responsible for triggering Windows 10 error 0x80071a91.

Therefore, we have enlisted working solutions geared towards fixing the error problem once and for all.

How do I fix Windows 10 error 0x80071a91?

1. Run a full system scan

Malwares and viruses can creep upon your Windows PC and corrupt important system drivers; hence, you experience Windows 10 error 0x80071a91 problem.

We highly recommend that you use MalwarebytesAdwCleaner-a malware removal tool to remove all malwares from your Windows PC.

Follow these steps download, install, and use MalwarebytesAdwCleaner on your Windows PC:

On the other hand, you can use other software packages such as Bitdefender (World’s Nr.1), Bullguard, Windows built-in antivirus-Windows Defender, and ZemanaAntiMalware.

You can use any of these programs to remove viruses and malware from your PC.

2. Install Microsoft Hotfix

Some Windows users were able to fix Windows 10 error 0x80071a91 by using Microsoft Hotfix.

Here’s how to do this:

However, if you are still experiencing the problem, try the next solution.

3. Run the Windows Update troubleshooter

Newer version of Windows 10 or Windows 10 Creators Update comes with Windows Update troubleshooting tool. Since, Windows 10 error 0x80071a91 is related to Windows update; therefore you need to use Windows Update troubleshooter.

Although, you may not be sure about how to use this troubleshooter in Windows 10, just follow the instructions below:

4. Reset Windows Updates components

Run a System Scan to discover potential errors

Click Start Scan to find Windows issues.

Click Repair All to fix issues with Patented Technologies.

Disclaimer: This solution contains steps that are part of modifying the registry. Please note that serious problems may occur if you do this incorrectly. Hence, follow these steps correctly, and carefully.

Here’s how to manually reset the Windows Updates Components:

Afterwards, rerun Windows Updates and install latest updates.

On the other hand, some Windows users recounted getting Access Denied prompts when trying the phases above. Here’s what to do if your access is denied:

Follow the steps above so as to reset Windows Update Components

After completing the process, go to Services window again, now start Windows Update service, and then restart the computer.

Note: We highly recommend that you check “Give me updates” menu for other Microsoft products when using Windows update option. Windows Updates downloads and installs updates required to run Windows efficiently.

5. Perform a Clean Boot

Clean boot starts up your Windows PC without software conflicts or unauthorized program running in the background. Sometimes, software conflicts cause Windows 10 error 0x80071a91; therefore, you need to clean boot.

Here’s how to do this:

6. Run System Restore in safe mode

Here’s how to run system restore:

Note: Pinpoint the restore point date before the error 0x80071a91 display. System restore does not affect any of your documents, personal data, and documents.

7. Roll Back to Windows 8.1/7

Latest upgrade from Windows 7/8/8.1 to Windows 10 can also cause Windows 10 error 0x80071a91. Therefore, you might want to downgrade your Windows OS back to its preceding OS.

Note: However, you may have to enter Safe Mode in order to downgrade.

Here is how to roll back your Windows OS:

Note: An intact Windows. old file (stored in C:Windows. old) is the important precondition for the downgrade.

Conclusively any of the aforementioned solutions should be able to fix Windows 10 error 0x80071a91 problem. However, if you still experience this issue, we will recommend that you consider installing Windows 10 OS afresh.

Have you encountered Windows 10 error 0x80071a91? Did you try any of our fixes above? We do appreciate it if you share your experience with us. Let us know in the comment section below.

Still having issues? Fix them with this tool: