Checklists for software errors, setup, and tool workflows.

Fix Git Clone Connection Timed Out via HTTPS

When cloning a repository over HTTPS, you may see 'Connection timed out' after a long wai...

Fix Nginx 502 Bad Gateway: Upstream Connection Refused

If you're seeing a 502 Bad Gateway error with "upstream connection refused" in your N...

How to Fix npm Install Permission Denied on Mac

If you see EACCES: permission denied when running npm install, it's...

Windows Defender Real-Time Protection Greyed Out: How to Fix

If you open Windows Security and see the real-time protection toggle greyed out, you can't tu...

Docker Nginx 502 Bad Gateway: Memory Limit Fix

You're running Nginx in Docker as a reverse proxy, and suddenly you see 502 Bad Gateway error...

How to Fix Git Merge Unrelated Histories Error

You run git pull or git merge and get:

fatal: refusing to...