Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

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Latest checklists

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

Fix ERR_NAME_NOT_RESOLVED with ipconfig /flushdns in Chrome
When Chrome shows ERR_NAME_NOT_RESOLVED, it means the browser couldn't trans...

Python Dependency Conflict Troubleshooting Guide
You're working on a Python project and suddenly get errors like ImportError or <...

Fix Windows Security App Permission Issues
You open Windows Security and see a message like "This app has been blocked for your protecti...

Fixing 'Command Not Found' in VS Code Terminal
You open the integrated terminal in VS Code, type a command you know is installed, and get ...

Fix 'Externally Managed Environment' Error on Linux
If you're on a modern Linux distribution (Ubuntu 23.04+, Debian 12+, Fedora 38+, etc.) and ge...