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 listNode Sass Build Failed: Complete Troubleshooting Checklist
When you see "Node Sass does not yet support your current environment" or a build failure...
Fix Chrome Status Access Violation Error on Windows 10
You're browsing in Chrome on Windows 10 and suddenly see an error page with: STATUS_ACC...
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 Windows 11 Installation Assistant Stuck at 99%
You're running the Windows 11 Installation Assistant, it reaches 99%, and then sits there. No...
Prevent Git Index Lock File Creation: Practical Fixes
If you see fatal: Unable to create 'path/to/.git/index.lock': File exists., ...
Topic paths
Quick titles
How to Resolve ERR_NAME_NOT_RESOLVED in ChromeFix Git SSL Certificate Problem: Unable to Get Local IssuerHow to Resolve Unrelated Histories in Git MergeWindows Update Service Won't Start Automatically? Fix ItFix Chrome ERR_CONNECTION_RESET ErrorFix Windows Security App Crashing on Windows 10/11Recover from Git Detached HEAD After RebaseFix Edge Sync Not Working After Update