Error 0x80071a91 is a frustrating issue that can prevent Windows 10 from installing critical updates. As a seasoned IT professional with over two decades of experience, I’ve encountered this error numerous times and developed effective strategies to resolve it. In this comprehensive guide, I’ll walk you through the causes of Error 0x80071a91 and provide step-by-step solutions to get your system back on track.
Understanding Error 0x80071a91
Error 0x80071a91 typically occurs during the Windows Update process. It’s often associated with issues in the File System Resource Manager (FSRM) service or corrupted system files. This error can leave your system vulnerable to security threats by preventing the installation of important updates.
Common causes include:
- FSRM service interruptions
- Corrupted system files
- Insufficient disk space
- Interference from third-party software
- Issues with the Windows Update database
It’s worth noting that Error 0x80071a91 is just one of many update-related errors you might encounter. Others include Error 0x800703f1 and Error 0x80070426, which can have similar causes but may require different solutions.
Method 1: Resetting the FSRM Service
The File System Resource Manager (FSRM) is crucial for managing file resources in Windows. Resetting this service often resolves Error 0x80071a91.
Follow these steps:
- Press Windows key + R to open the Run dialog
- Type “cmd” and press Ctrl + Shift + Enter to open Command Prompt as administrator
- Enter the following command:
fsutil resource setautoreset true C: - Press Enter and restart your computer
This command resets the FSRM service, which is frequently the root cause of Error 0x80071a91.
Method 2: Running the Windows Update Troubleshooter
Microsoft’s built-in troubleshooter can automatically detect and fix many update-related issues.
To run the troubleshooter:
- Open Settings (Windows key + I)
- Navigate to System > Troubleshoot
- Click “Additional troubleshooters“
- Select “Windows Update” and click “Run the troubleshooter“
- Follow the on-screen instructions
The troubleshooter will identify problems and apply fixes, potentially resolving Error 0x80071a91. This method can also help with other update errors like Error 0x80080008.
Method 3: Using the System File Checker (SFC) Tool
Corrupted system files can cause various errors, including 0x80071a91. The SFC tool scans for and repairs these files.
To run an SFC scan:
- Open Command Prompt as administrator
- Enter the following command:
sfc /scannow - Wait for the scan to complete (this may take some time)
- Restart your computer
If SFC finds and repairs any corrupted files, it may resolve Error 0x80071a91. This method is also effective for addressing Error 0x80070570, which is often related to system file corruption.
Method 4: Clearing CLFS Transaction Logs
Clearing Common Log File System (CLFS) logs can sometimes fix update errors.
Follow these steps carefully:
- Open Command Prompt as administrator
- Enter the following commands, pressing Enter after each:
cd /d %SystemRoot%\System32\SMI\Store\Machineattrib -s -h *del *.blfdel *.regtrans-ms
- Restart your computer
This process removes potentially corrupted log files that may be causing Error 0x80071a91.
Additional Troubleshooting Steps
If the above methods don’t resolve the issue, try these additional steps:
- Reset Windows Update components:
- Stop Windows Update services
- Rename the SoftwareDistribution folder
- Restart services
- Perform a clean boot:
- Disable non-essential startup programs
- Identify potential software conflicts
- Check disk space:
- Ensure at least 10GB of free space on your system driveUse Disk Cleanup to free up space if necessary
- Temporarily disable antivirus software:
- Some security programs can interfere with updates
- Re-enable after testing
- Manual update installation:
- Download updates from the Microsoft Update Catalog
- Install manually if automatic updates fail
Preventing Future Occurrences of Error 0x80071a91
To minimize the risk of encountering Error 0x80071a91 in the future:
- Perform regular system maintenance
- Keep device drivers and software up-to-date
- Create system restore points before major updates
- Monitor and manage disk space regularly
- Use reputable antivirus software and keep it updated
Regular maintenance can also help prevent other common errors like Error 0x80070652 and Error 0x80040154.
Conclusion
Error 0x80071a91 can be frustrating, but with the methods outlined in this guide, you should be able to resolve the issue and keep your Windows 10 system up-to-date. Remember to approach each solution carefully and systematically. If you’re uncomfortable performing any of these steps or if the error persists, don’t hesitate to seek help from a professional IT support service.
FAQs About Error 0x80071a91
Q: Is it safe to delete CLFS transaction logs? A: When done correctly, deleting these logs is safe and can often resolve update issues. However, always follow instructions carefully when modifying system files.
Q: Can Error 0x80071a91 cause data loss? A: While the error itself doesn’t typically cause data loss, some troubleshooting steps may involve modifying system files. It’s always wise to backup important data before attempting fixes.
Q: How long does it take to run an SFC scan? A: An SFC scan can take anywhere from 10 minutes to several hours, depending on your system’s speed and the extent of any corruption.
Q: Will resetting Windows Update components delete my personal files? A: No, resetting Windows Update components only affects update-related files and shouldn’t impact your personal data.
Q: Can I skip Windows updates if I keep encountering Error 0x80071a91? A: It’s not recommended to skip updates, as they often contain critical security patches. Continue troubleshooting or seek professional help to resolve the error.
