Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You open Command Prompt, type python, and see 'python' is not recogniz...

Windows Security App Not Opening: Practical Fixes
If the Windows Security app won't open—clicking the icon does nothing, or it crashes immediat...

Fix npm Global Install Permission Denied Without Sudo
When you run npm install -g and see "EACCES: permission denied", it's be...

Fix Chrome Status Access Violation in Safe Mode
If you see a 'status access violation' error in Chrome while in safe mode, it usually poi...

Docker Compose .env File Not Loading: Common Fixes
You set environment variables in a .env file next to your docker-compose.yml

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