Checklists for software errors, setup, and tool workflows.

Fix ERR_CERT_AUTHORITY_INVALID on Localhost

When testing a local web app, you may see ERR_CERT_AUTHORITY_INVALID in Chrome or si...

Fix VS Code Git Not Detecting Changes After .gitignore Update

After updating your .gitignore file, you might notice that VS Code's Git extensi...

Fix Windows Defender Real-Time Protection Not Running

You open Windows Security and see a yellow warning: "Real-time protection is off." Or you...

Fix 'pip externally managed environment' Error for venv Setup

When creating a Python virtual environment on newer Linux distributions (e.g., Debian 12, Ubuntu ...

How to Fix Git Merge Unrelated Histories Error

You run git pull or git merge and get:

fatal: refusing to...