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

Configure Windows Terminal to Trust a Self-Signed Certificate

If you're using a self-signed certificate for HTTPS on a local server or test environment, Window...

WireGuard Handshake Not Completing: Practical Checklist

If your WireGuard tunnel is up but the handshake never completes, you'll see no data transfer and...

How to Set Up Certbot with Nginx on Ubuntu 22.04

If you're running Nginx on Ubuntu 22.04 and need a free SSL certificate, Certbot with the Nginx p...

Fix Windows Store Error 0x80073cf9 During Installation

Windows Store error 0x80073cf9 typically appears when you try to install or update a...

BitLocker Invalid Configuration Recovery Key Error Fix

When BitLocker prompts for a recovery key and then shows an "invalid configuration" error, the dr...

Fix Outlook Blank Screen After Office Installation

Symptom and likely cause

After installing or updating Microsoft Office, Outlook may open ...