Checklists for software errors, setup, and tool workflows.

Prevent Git Index Lock File Creation: Practical Fixes

If you see fatal: Unable to create 'path/to/.git/index.lock': File exists., ...

How to Reset Windows Security App Settings

If the Windows Security app isn't opening, showing errors, or behaving oddly, resetting its s...

Chrome Certificate Error Invalid Authority: Diagnosis Checklist

When Chrome shows NET::ERR_CERT_AUTHORITY_INVALID and refuses to load a site, it...

Fix 'Python Command Not Found' in Anaconda on Windows

If you installed Anaconda on Windows but typing python in Command Prompt returns

Fix 'git pull failed index.lock file exists' Error

When running git pull, you may see an error like:

fatal: Unable to create &#...

Fix 'node sass build failed permission denied' Error

You're running npm run build and hit Error: EACCES: permission denied