Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see an error like fatal: Unable to create 'path/to/repo/.git/index.lock': Fi...

Fix Windows 11 Blue Screen After Memory Diagnostic
You ran Windows Memory Diagnostic after a blue screen, and now you're stuck in a loop or seei...

Fix Windows Search Index Not Indexing New Files
If you've added new files to a folder but Windows Search can't find them, the search inde...

Fix 'Port Already Allocated' Error in Docker Compose on Windows
You try to run docker compose up and get an error like "port is already allo...

Fix 'Port Already Used by Another Container' in Docker Compose
When you run docker compose up and see an error like port is already allocated...

Prevent Git Index Lock File Creation: Practical Fixes
If you see fatal: Unable to create 'path/to/.git/index.lock': File exists., ...