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

Windows 10 Taskbar Icons Not Showing? Here's How to Fix It

You log into Windows 10, and the taskbar is nearly empty—no icons for open apps, pinned programs,...

Clear Chrome Certificate Cache to Fix NET::ERR_CERT_AUTHORITY_INVALID

When you see NET::ERR_CERT_AUTHORITY_INVALID in Chrome, it usually means the browser...

Fix Discord Black Screen from Chrome Hardware Acceleration

Why Chrome Hardware Acceleration Causes Discord Black Screen

When Chrome uses hardware a...

Add Python to PATH on Windows 10 When 'Command Not Found'

After installing Python on Windows 10, typing python in Command Prompt may give you ...

Fix Docker Nginx 502 Bad Gateway with MySQL

You have a Dockerized web app behind Nginx, and you're seeing a 502 Bad Gateway error. The ap...

Nginx Permission Denied After Restart: Fixes That Work

After restarting nginx, you might see errors like connect() to unix:/var/run/php-fpm.sock f...