Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You run source venv/bin/activate (or venv\Scripts\activate on Windows) ...

If you open Services.msc and the Windows Update service (wuauserv) is not listed, automatic updat...

You try to install a Python package with pip, and get an error like error: externally-manag...

Docker Compose Port Already Allocated: Fixes & Checks
When you run docker-compose up and see an error like Error starting userland p...

Fix 'Permission Denied' in VS Code When File Isn't Read-Only
You're editing a file in VS Code and get a 'Permission denied' error when saving, eve...

Fix npm install Permission Denied Due to Incorrect Node Ownership
When you run npm install and see a permission denied error, it's often because t...