Knowledge base for software setup, errors, and daily tool work.

Fixing Nginx Upstream Connection Refused on Port 443

You see "upstream connection refused" in your Nginx error log when proxying requests to p...

Fix 'Python Command Not Found' in Anaconda on Windows

Fix 'docker network not found default network' Error

When you see docker network not found default network, it usually means Docker can&#...

Why Windows Security App Keeps Crashing and How to Fix It

If the Windows Security app keeps crashing when you open it, you're not alone. This issue oft...

Fix Nginx Upstream Connection Refused & Upstream Not Found

When you see upstream connection refused or upstream not found in your ...

Windows 11 Update Stuck at 0%? Here's How to Fix It

You click "Check for updates" and see the download sitting at 0% for minutes or hours. Th...