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

Cloudflare Origin Certificate Configuration Guide

If your site uses Cloudflare and you want HTTPS between Cloudflare and your origin server, an ori...

How to Reinstall Windows Defender in Windows 10

Windows Defender (now called Microsoft Defender Antivirus) is built into Windows 10 and typically...

Fix Nginx Config Test Fails with 'upstream host not found'

You run nginx -t and get upstream host not found. The config test fails...

Fix Dependency Conflict Blocking Windows Activation Setup

You try to activate Windows, but the setup fails with a message about a dependency conflict. This...

Windows Update Migration Troubleshooting Checklist

When you migrate Windows to a new drive or system, update problems often surface. This guide walk...

Fix PowerShell 404 Error When Using Invoke-WebRequest