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

Fix Edge Sync Not Syncing Tabs Across Devices

You open a tab on your desktop, but it doesn't show up on your phone or laptop. This is a com...

How to Fix Nginx Upstream Connection Refused on Port 80

When nginx logs show "upstream connection refused" while connecting to port 80, it means ...

How to Fix Chrome Sync Error 'Sign In Again'

What the Error Means

When Chrome displays 'Sign in again' in the sync settings, i...

How to Generate a Cloudflare Origin Certificate

If you're using Cloudflare as a reverse proxy, you may want to encrypt traffic between your s...

Fix Docker Compose 'Port Already Allocated' for MySQL

You run docker compose up and get an error like Error: Port 3306 is already al...