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 listFixing Python Dependency Conflicts with Incompatible Versions
You're working on a Python project, and after installing a new package, you get errors like <...
How to Recover Stashed Changes in Git Detached HEAD
If you've stashed changes while in a detached HEAD state in Git, you might worry they're ...
Fix net::ERR_CERT_AUTHORITY_INVALID in Chrome on Android
When browsing on Chrome for Android, you might encounter the error net::ERR_CERT_AUTHORITY_...
Fix 'pip externally managed environment' Permission Denied Error
If you see error: externally-managed-environment when trying to install a Python pac...
How to Fix Windows Update Service Not Running
If Windows Update won't start or you see an error like "Windows Update cannot check for u...
Topic paths
Quick titles
VS Code Breakpoint Greyed Out: Causes and SolutionsTroubleshoot VS Code Terminal and CondaPermission Denied in VS Code When Removing FilesHow to Fix ERR_CONNECTION_RESET in ChromePython Requests Timeout Troubleshooting GuideResolve Error 0x80070005 in Windows UpdateHow to Handle Git Merge Conflicts: A ChecklistWindows Security Permission Error Fix