Fix 0x80070020

Another process is locking Windows Update files.

Try the fastest fix for 0x80070020

If you want to avoid working through manual repair steps first, you can start with an automated scan. It can check for corrupted system files, broken services, and other windows update problems commonly tied to error 0x80070020.

Optional faster option

Scan for problems causing 0x80070020

Manual fixes are listed below if you prefer to troubleshoot it yourself first.

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What it means

Another program (often antivirus, backup tools, or installers) is using a file Windows Update needs.

Try this first

Restart your PC and try Windows Update again.
Close background installers and pause antivirus scans temporarily.
Try updating after a clean boot (optional).

Want to skip the more advanced repair steps?

The next steps may involve deeper troubleshooting, system repair commands, or repeated testing. If you want to try a faster automated option before continuing, run a scan for 0x80070020 first.

Before advanced fixes

Try automated repair first

Good option if you would rather avoid command-line work and longer manual troubleshooting.

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Advanced steps

Run Windows Update Troubleshooter.
Repair system files: sfc /scannow
Reset Windows Update components and retry.

Related Windows Update Errors

Windows Update problems often appear in clusters. These related update and servicing guides may help you troubleshoot the next issue faster.

Reset Update Components (Unlock Common File Locks)

If another process is locking update files, restarting services and resetting the update cache often clears 0x80070020.

Run these commands one at a time (Command Prompt as Admin):

Reset Update Components (Unlock Common File Locks) cmd

net stop wuauserv
net stop bits
net stop cryptsvc
net stop msiserver

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

net start wuauserv
net start bits
net start cryptsvc
net start msiserver

sfc /scannow

Tip: Paste into Command Prompt with Ctrl + V

Restart your PC and try Windows Update again.

Related Windows Errors

If you’re seeing multiple errors, these related guides may also help:

If the Error Still Persists

If background software keeps locking Windows Update files, manual steps may not fully resolve repeated failures.

An automated repair tool can scan for Windows issues and help stabilize updates.

Recommended next step

Fix Windows Update issues automatically

Best if you want to try a faster repair path before spending more time on manual fixes.

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Frequently Asked Questions

What causes error 0x80070020?

This error usually occurs when a required Windows component, service, or system file is not working correctly. It may be caused by corrupted system files, disabled services, failed updates, or software conflicts.

Is error 0x80070020 dangerous?

The error itself is not dangerous, but it can prevent Windows features, updates, or applications from working properly. If ignored, it may lead to stability or security issues over time.

Can error 0x80070020 be fixed without reinstalling Windows?

Yes. In most cases, this error can be resolved using troubleshooting steps such as repairing system files, enabling required services, or using automated repair tools, without needing to reinstall Windows.