How to Fix 'File Locked by System' in Windows Defender
If you see an error like "File locked by system" when running a Windows Defender scan or trying t...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Security Error 0x80073b01
You try to install or update an app from the Microsoft Store, and Windows Security throws error 0...
Fix 'Cannot Open as Archive' Error for 7-Zip Password Files
You try to open a password-protected .7z or .zip file with 7-Zip and get the error 'Cannot open a...
How to Fix Outlook 502 Bad Gateway Error
When you see a 502 Bad Gateway error in Outlook, it usually means the server rec...
Fix Windows Activation Proxy Server Error
When you try to activate Windows and see an error about a proxy server, it usually means the acti...
Fixing Chrome File System Permission Denied Errors
If you see a 'file system permission denied' error in Chrome—often when trying to save a download...
Topic paths
Quick titles
Troubleshoot Microsoft Store Internet ErrorPowerShell 429 Error: How to Fix Rate LimitingResolve Task Scheduler Command Missing ErrorFix Chrome Not Opening from Command LineFix Remote Desktop Version Mismatch on WindowsHow to Clear Chrome Profile Cache Without Losing PasswordsCertbot Nginx SSL Renewal Failure FixHow to Fix Chrome Network Issues in Windows 10