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

Fix 'port already allocated' Error in Docker Compose

You run docker compose up and see port is already allocated. This means...

Fix Nginx Upstream Connection Refused Behind Cloudflare

If you see upstream connection refused in your Nginx error logs while using Cloudfla...

Fix Windows Update Error 0x80070005 by Taking Ownership

What Causes Error 0x80070005?

This error usually means Windows Update doesn't have pe...

Grant Docker Registry Pull Access: Step-by-Step Guide

If you manage a private Docker registry, you often need to give certain users or CI systems the a...

Fix Chrome Certificate Error: Invalid Authority & Date/Time Issue

You're browsing in Chrome and see a full-page warning: Your connection is not private...