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

Fix Nginx 'upstream connection refused' When Talking to PHP-FPM

You're seeing upstream connection refused in your Nginx error log, and your site...

Fix Nginx Configuration Test Failure After SSL Setup

You've just added SSL certificates to your Nginx server block, but nginx -t retu...

Fix Discord Black Screen from Chrome Hardware Acceleration

Why Chrome Hardware Acceleration Causes Discord Black Screen

When Chrome uses hardware a...

Windows 11 Installation Assistant Stuck at 99% Disk Space

You’re running the Windows 11 Installation Assistant, it gets to 99%, and then sits there. The pr...

Fix 'Windows Cannot Access Shared Folder' Samba Error

You try to open a shared folder from a Linux Samba server on a Windows machine and get: 'Wind...

How to Debug Docker Compose Environment Variables

When environment variables don't show up inside a container, the application often fails sile...