Checklists for software errors, setup, and tool workflows.

How to Fix VS Code IntelliSense Not Working

If you're seeing no suggestions, missing completions, or a spinning 'Loading...' in V...

How to Fix Cloudflare Origin Certificate Validation Failed

If you see a "validation failed" error when setting up or using a Cloudflare Origin Certi...

Windows 11 Update Stuck at 0%: How to Fix with Troubleshooter

You click Check for updates, it sits at 0% for ages, and the progress bar doesn't budge. This...

Fixing Nginx 502 Bad Gateway in Docker Networks

You have an Nginx container proxying requests to another container (like a PHP-FPM or Node app), ...

Fix 'package.json Not Found' After Cloning a Repository

Symptom

You clone a repository from GitHub (or another remote), change into the directory...

Fix Git Authentication Failed in VS Code on Mac

If you see "Git authentication failed" when pushing or pulling in VS Code on a Mac, the p...