If you’ve encountered Windows Update error 0x8007371B, you’re not alone. This error usually appears when Windows is unable to install a cumulative or security update. In most cases, the problem is caused by corrupted system files, damaged update components, or interrupted update services.
The good news is that you can often resolve the issue without reinstalling Windows. This guide covers the most effective troubleshooting methods.
What Is Windows Update Error 0x8007371B?
Error 0x8007371B generally indicates that Windows has found inconsistencies in the files needed to install an update. These inconsistencies can prevent the update process from completing successfully.
Common causes include:
- Corrupted Windows system files.
- Damaged Windows Update cache.
- Interrupted or incomplete updates.
- Software conflicts.
- Disk errors or insufficient storage space.
Method 1: Restart Your Computer
A simple restart can sometimes resolve temporary issues that prevent updates from installing.
- Save your work and restart your PC.
- Open Settings > Windows Update.
- Select Check for updates and try the installation again.
Method 2: Run the Windows Update Troubleshooter
Windows includes a built-in tool that automatically detects and fixes many update-related problems.
- Open Settings.
- Navigate to System > Troubleshoot > Other troubleshooters.
- Find Windows Update.
- Click Run and follow the recommendations.
After the troubleshooter finishes, restart your computer.
Method 3: Repair Windows System Files
Corrupted system files are one of the most common reasons for update errors.
Open Command Prompt as Administrator and run:
sfc /scannow
When the scan completes, run:
DISM /Online /Cleanup-Image /RestoreHealth
These tools repair damaged Windows files that may be preventing the update from installing.
Method 4: Clear the Windows Update Cache
A corrupted update cache can trigger installation failures.
To reset it:
- Stop the Windows Update service.
- Rename the SoftwareDistribution folder.
- Rename the Catroot2 folder.
- Restart the Windows Update service.
- Check for updates again.
Windows will automatically create new update folders during the next update check.
Method 5: Check Your Disk for Errors
File system errors can interfere with Windows Update.
Open Command Prompt as Administrator and run:
chkdsk C: /f
If prompted, schedule the scan for the next restart and reboot your PC.
Method 6: Make Sure You Have Enough Free Space
Large cumulative updates require adequate free disk space.
To free storage:
- Delete temporary files.
- Empty the Recycle Bin.
- Remove unused programs.
- Use Storage Sense to clean unnecessary files.
Having at least 15–20 GB of free space is recommended before installing major updates.
Method 7: Install the Update Manually
If Windows Update continues to fail, download the update directly from the Microsoft Update Catalog.
Search using the update’s KB number, download the correct version for your system, and install it manually.
Frequently Asked Questions
Does error 0x8007371B mean Windows is damaged?
Not necessarily. In most cases, the error only indicates that Windows encountered a problem while installing an update.
Can antivirus software cause this error?
Yes. Some third-party antivirus programs may temporarily interfere with Windows Update. If troubleshooting doesn’t help, you can briefly disable the antivirus, install the update, and then enable it again.
Is it safe to reset Windows Update components?
Yes. Resetting Windows Update components only clears cached update files and does not delete your personal documents or installed applications.
Final Thoughts
Windows Update error 0x8007371B is usually fixable without advanced technical knowledge. Start with the built-in troubleshooter, repair system files using SFC and DISM, clear the update cache, and ensure your PC has enough free storage. If the update still won’t install, downloading it manually is often an effective workaround.
Keeping Windows fully updated helps improve security, stability, and performance, so it’s worth resolving this error as soon as possible.