Fix Git 'index.lock' File Exists Error in SourceTree
If you use SourceTree and see an error message like fatal: Unable to create 'path/to/.g...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Update Error 0x80070002 Using DISM
If you see Windows Update error 0x80070002, it usually means the update system can't find a n...
How to Fix 'fatal: refusing to merge unrelated histories' in Git
If you see fatal: refusing to merge unrelated histories when running git merge...
Fix Docker Build Context Canceled by Symlink Errors
If you see context canceled during a docker build and you have symlinks...
Fix Git SSL Certificate Problem on macOS: Unable to Get Local Issuer
If you're seeing fatal: unable to access 'https://...': SSL certificate problem...
Fix Windows Explorer Restarting: Performance Troubleshooting Guide
Windows Explorer repeatedly restarting can make your PC nearly unusable. The taskbar flickers, fi...
Topic paths
Quick titles
Group Policy Method to Enable Windows Defender Real-Time ProtectionNginx Cannot Read File: Permission FixHow to Fix Merge Conflicts After Cherry-PickNginx Configuration Test Failed: Duplicate Listen FixFix Nginx 502 Bad Gateway in Docker ContainersWindows Update Service Disabled TroubleshootingResolve pip Externally Managed Environment ErrorFix Docker Volume Permission Denied on Mac