How to Fix Windows Error 0x80070020 (File In Use)
Quick Fix Summary
TL;DRStop the process holding the file lock using Task Manager or the Resource Monitor.
Error 0x80070020 is a sharing violation indicating a file or folder is locked by another process, preventing access. This is a common Windows system or application conflict.
Diagnosis & Causes
Recovery Steps
Step 1: Identify and Terminate the Locking Process
Use Resource Monitor to pinpoint the exact process with the file handle and end it.
resmon
Navigate to the 'CPU' tab -> 'Associated Handles' -> Search for the locked file path.
Right-click the identified process -> 'End Process'.Step 2: Stop and Restart Critical Windows Services
Restart services that commonly cause file locks, especially during updates or installations.
net stop wuauserv
net stop cryptSvc
net stop bits
net stop msiserver
net start wuauserv
net start cryptSvc
net start bits
net start msiserverStep 3: Clear the SoftwareDistribution Cache
Corrupted Windows Update cache files are a prime culprit. Rename the folder to force a rebuild.
net stop wuauserv
net stop bits
ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
net start wuauserv
net start bitsStep 4: Boot into Safe Mode and Perform the Action
A clean boot state minimizes running processes, allowing you to delete or modify the locked file.
msconfig
Go to the 'Boot' tab -> Check 'Safe boot' -> Select 'Minimal' -> Apply/OK -> Restart.Step 5: Use the Command Line to Take Ownership and Force Delete
For stubborn system files, use an elevated command prompt to forcibly change ownership and delete.
takeown /f "C:\Path\To\LockedFile.exe" /a
icacls "C:\Path\To\LockedFile.exe" /grant administrators:F
del /f "C:\Path\To\LockedFile.exe"Step 6: Utilize Sysinternals Process Explorer (Advanced)
Process Explorer provides superior handle and DLL viewing. Use 'Find Handle or DLL' (Ctrl+F).
Download Process Explorer from Microsoft.
Run as Administrator -> Press Ctrl+F -> Search for the file name.
Right-click the process -> 'Close Handle'.Architect's Pro Tip
"For persistent locks during Windows Updates, temporarily disable your third-party antivirus real-time protection before attempting the update. It's the most common silent blocker."
Frequently Asked Questions
Can I fix error 0x80070020 without restarting my computer?
Yes, in most cases. Using Resource Monitor or Process Explorer to find and end the specific locking process is the fastest non-reboot solution.
Why does this error keep happening with Windows Update?
The Windows Update service (wuauserv), BITS, or the Cryptographic service can get stuck holding locks on files in the SoftwareDistribution folder. Stopping these services and clearing the cache usually resolves it.
Is it safe to delete files causing the 0x80070020 error?
Only if you have identified them as non-critical (e.g., temporary update files, a user document). Never force-delete core Windows system files (e.g., from System32) without absolute certainty.