Fix Git 'index.lock' Error in VS Code
If you see the error 'fatal: Unable to create 'path/.git/index.lock': File exists'...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFixing Cloudflare 521 Error After Server Restart
You restart your server, wait for it to come back up, then visit your site—only to see a Cloudfla...
How to Allow Unrelated Histories in Git Merge
If you see the error fatal: refusing to merge unrelated histories when running
How to Fix Git Push Rejected (Non-Fast-Forward) Error
You run git push and get an error like ! [rejected] main -> main (non-fast-...
Fix Docker Compose 'Port Already Allocated' for MySQL
You run docker compose up and get an error like Error: Port 3306 is already al...
How to Fix Git Detached HEAD State and Undo Changes
You run git status and see something like "HEAD detached at abc123". This ha...
Topic paths
Quick titles
How to Fix Merge Conflicts After Cherry-PickWindows Security App Configuration Error FixEdge Sync Not Working with Family Safety FixSourceTree Detached HEAD: How to Fix ItVS Code terminal blank or not starting Windows 10How to Clear Unresolved Paths in Git RebaseTaskbar Icons Disappeared After Explorer Crash: How to Restore ThemVS Code Git Auth Error on Mac: How to Fix