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 listFix Windows Update Error 0x80070002 After Update
After a Windows Update, you may see error 0x80070002. This usually means the system can't fin...
How to Fix 'git remote origin already exists' in GitHub
When working with Git and GitHub, you might encounter the error: fatal: remote origin alrea...
Fix Python UnicodeDecodeError When Parsing JSON
You're parsing a JSON file in Python and hit UnicodeDecodeError: 'utf-8' codec ...
Fix Git Lock File Not Deleted After Crash
If Git reports a lock file error after a crash, it usually means a previous Git operation was int...
Fix Python Permission Denied When Installing Virtualenv with Pip
When you run pip install virtualenv and see a Permission denied err...
Topic paths
Quick titles
Windows Explorer Keeps Crashing: Quick FixesHow to Resolve Firefox Certificate Trust IssuesHow to Resolve Git Detached HEADHow to Fix Git Detached HEAD ErrorHow to Fix npm ERR! enoent ENOENT: package.json MissingWindows Security App Not Opening Command Prompt FixHow to Fix Cloudflare Origin Certificate Validation FailedHow to Fix npm Install Permission Denied on Mac