Fix Git 'index.lock file exists' Error
When 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 listFix Git SSL Certificate 'Unable to Get Local Issuer' After Update
After updating Git or your operating system, you may encounter the error fatal: unable to g...
Docker Compose Port Already Allocated: How to Fix
You run docker-compose up and see an error like Error: Port 8080 is already al...
How to Fix Nginx 502 Bad Gateway in Docker Logs
If your Nginx container shows a 502 Bad Gateway error, it usually means Nginx cannot...
Fix Map Network Drive Access Denied on Windows 10
You try to map a network drive in Windows 10, but get an 'Access Denied' error. This usua...
Fix Windows 11 Installation Assistant Stuck at 99% with Clean Boot
You're upgrading to Windows 11, and the Installation Assistant gets stuck at 99% for a long t...
Topic paths
Quick titles
Fix Docker Volume Permission DeniedHow to Launch Windows Security in Safe ModeFix VSCode Save File Permission Denied ErrorFix ERR_CONNECTION_RESET in Chrome on Windows 10Resolve 521 Web Server Down with Firewall ChangesFix Nginx Permission Denied After RestartFix Chrome Sync Not Working with Family LinkChrome Startup Failure Registry Repair