Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You open Terminal, run source venv/bin/activate, and nothing happens—or you get an e...

You open a TypeScript file in VSCode, start typing, and get no autocomplete, no hover info, no er...

If Windows Update stops working, the most common reason is that the Windows Update service isn...

You start a Docker container, it runs for a second, then stops. No error messages, just a quick e...

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

Fix Firefox Secure Connection Failed Due to Proxy Settings
If you see "Secure Connection Failed" in Firefox and suspect a proxy is involved, you'...