Checklists for software errors, setup, and tool workflows.

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Fix 'pip install externally managed environment' Error

If you're seeing pip install fail with a message about an externally managed env...

Fix Firefox Secure Connection Failed Due to Proxy Settings

If you see "Secure Connection Failed" in Firefox and suspect a proxy is involved, you'...

Fix Windows Security App Blocked by Antivirus

You open Windows Security (formerly Windows Defender) only to see an error or blank screen becaus...

Fix ERR_NAME_NOT_RESOLVED with CMD: Step-by-Step Guide

When you see ERR_NAME_NOT_RESOLVED in your browser, it usually means your computer can't tran...

How to Fix 'fatal: refusing to merge unrelated histories' in Git

If you see fatal: refusing to merge unrelated histories when running git merge...

Fix Windows Security App Not Opening Command Prompt
You click the Windows Security icon or try to launch it from Settings, but nothing happens. Or pe...