How to Fix the Git index.lock File Exists Error
You're in the middle of a Git operation—commit, merge, or rebase—and Git stops with: fa...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix VSCode Breakpoints Not Hit in launch.json
You set a breakpoint in Visual Studio Code, start debugging with a launch.json confi...
Fix Windows Update Service Not Running with DISM Restore Health
You try to run DISM /Online /Cleanup-Image /RestoreHealth and get an error saying th...
Fix 'Permission Denied' When Installing Python Packages Without sudo
If you see "Permission denied" when running pip install, you're not alon...
Docker Desktop Engine Not Responding: Practical Fixes
You click Start in Docker Desktop, the whale icon spins, but nothing happens — o...
Fix Git 'index.lock file exists' Error
When you see the error fatal: Unable to create 'path/.git/index.lock': File exists....
Topic paths
Quick titles
How to Resolve Windows Update Error 0x80070005Git Push Rejected Not Fast Forward GuideHow to Fix Windows Update Error 0x800f081fResolve Git Non Fast Forward Push ErrorFix DNS Probe Finished NXDOMAIN on Router: Step-by-StepFix Git Push Rejected Due to Unrelated HistoriesGit SSL Certificate Error Windows FixHow to Fix pip Permission Denied in Managed Python