Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

After updating Node.js, you may find that pnpm commands fail with errors like command not f...

How to Fix 'fatal: refusing to merge unrelated histories' in Git
If you see fatal: refusing to merge unrelated histories when running git merge...

How to Fix Git Push Rejected Non-Fast-Forward Error
You run git push and get ! [rejected] with non-fast-forward

Windows Update Service Not Running in Windows 11: Fix It
If Windows Update won't start and you see an error like "Windows Update service is not ru...

Git Detached HEAD: Practical Checklist and Fixes
You see a message like 'You are in 'detached HEAD' state' when checking out a com...

Fix Git Authentication Failed in VS Code on Linux
You're working in VS Code on Linux, try to push or pull, and get a popup: "Git authentica...