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

Fix Windows Security DNS Error Blocking Internet Access

If your internet stops working and you see a Windows Security DNS error, it usually means the DNS...

Fix Nginx 502 Bad Gateway in Docker Containers

You're running an Nginx container in Docker, but instead of your app, you see a 502 Bad Gateway e...

Fix 'Port Already Allocated' Error in Chrome via Command Line

You start Chrome from the command line and get an error that the port is already allocated. This ...

How to Fix Windows Security Invalid Configuration Error

If you see a message that says "Invalid configuration" when opening Windows Security, the app usu...

How to Fix Cloudflare 525 Error: Origin Server Troubleshooting

Cloudflare 525 error means the SSL handshake between Cloudflare and your origin server failed. Th...

Fix PowerShell 404 Error When Using Invoke-WebRequest