Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

View list

Windows Security App Won't Open in Safe Mode: Fixes

If you’re in Safe Mode and the Windows Security app refuses to open—showing a blank window, crash...

Python Virtual Environment Not Activating in Git Bash: Fixes

You're in Git Bash on Windows, you run source venv/Scripts/activate, and nothing...

Python Memory Error When Processing Large Files: Troubleshooting Checklist

You're running a Python script that reads a large file—maybe a CSV with millions of rows, a l...

Chrome Certificate Error: Not Secure Site Workaround

You're trying to reach a site and Chrome shows a full-page warning: “Your connection is not p...

Fix npm 'package.json not found' Error in Subdirectories

You're working in a subdirectory of your project, run npm install or npm r...

Fix VS Code Source Control Not Detecting Changes After Branch Switch
After switching branches in Git, VS Code's Source Control view sometimes stops showing change...