Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see the error error: externally-managed-environment when running pip in...

How to Repair Windows Security App Issues
If the Windows Security app won't open, shows a blank screen, or gives errors like "This ...

Checklist for Pushing Large Files with Git
You've likely hit this: you try to push a commit, and Git rejects it because a file is too la...

VS Code Git Not Detecting Changes: Step-by-Step Fix
You've edited files in VS Code, but the Source Control panel shows no changes. The git icon m...

How to Fix Git Clone Connection Timed Out Error
When you run git clone and see a connection timed out error, it usually...

Python Virtual Environment Not Activating on Mac: Fixes
You open Terminal, run source venv/bin/activate, and nothing happens—or you get an e...