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

Fix Nginx 502 Bad Gateway Behind Cloudflare

If you're seeing a 502 Bad Gateway error on a site that uses both Nginx and Clou...

How to Reset Windows Defender Settings to Default

You might need to reset Windows Defender (now Microsoft Defender Antivirus) to its default settin...

Windows Security Antivirus Configuration for Beginners

Windows Security (formerly Windows Defender) is the built-in antivirus in Windows 10 and 11. For ...

Fix Windows 11 Update Stuck on Downloading

You click 'Check for updates' and see the progress bar stuck at 0% or a percentage that doesn't m...

Fixing PowerShell Remote Execution Failures on a Network

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED Error

When you see "ERR_TUNNEL_CONNECTION_FAILED" in Chrome, it usually means your browser can't establ...