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

Fix Visual Studio Installer Stuck at Downloading Components

You start a new Visual Studio installation or update, and the progress bar stops at “Downloading ...

Fix Remote Desktop High Memory Usage on Windows 10

If you notice that Remote Desktop (mstsc.exe) or the Remote Desktop Services (TermService) proces...

Fix Windows Security 404 Error Not Loading

You open Windows Security and see a 404 error or the page fails to load. This usually points to a...

Troubleshoot 502 Bad Gateway with Curl Commands

A 502 Bad Gateway error means your server (gateway) got an invalid response from an upstream serv...

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED Error

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

Certbot Renewal Failed Due to Nginx Configuration: How to Fix