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

How to Fix VSCode Extension Host Terminated Unexpectedly

You're working in Visual Studio Code when suddenly a popup says "Extension host terminated unexpe...

Fix 'UFW Status Shows Port Not Active' Error

You run sudo ufw status and see a rule for a port, but the port isn't actually activ...

Fix Windows Defender Rate Limit Error Not Working

If you see a 'rate limit error' in Windows Defender and it's not working properly—scanning fails,...

How to Setup SSL Certificate for Windows Update

If Windows Update fails with errors like 0x80072F8F or 0x8024402C, the problem might be a missing...

Cloudflare Error 521: Web Server Down Troubleshooting Guide

When you see Cloudflare error 521, it means Cloudflare cannot connect to your origin web server. ...

Fix SSH 504 Gateway Timeout in Windows Terminal