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

Fix Windows Terminal Not Working After Update

After a Windows or Terminal update, you might see a blank window, crash on launch, or error messa...

Fix Task Scheduler Error 0x80070020: Port Already in Use

When you see error 0x80070020 in Task Scheduler with the message "port already in use," it usuall...

WireGuard Handshake Failure: Configuration Check Guide

You've set up WireGuard, but the handshake keeps failing. The tunnel won't establish, and you see...

Windows Defender 502 Bad Gateway: Troubleshooting Checklist

If you see a 502 Bad Gateway error when opening Windows Security or trying to update Windows Defe...

Fix PowerShell Proxy Authentication Failed Errors

Fix Windows Defender Error 502 Bad Gateway

You open Windows Security and see 'Error 502 – Bad Gateway.' This usually means Windows Defender ...