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

Windows Security 404 Not Found: Setup and Fix Guide

When you open Windows Security (formerly Windows Defender) and see a blank page or a '404 Not Fou...

Fix Windows Security App Blank White Screen

You open Windows Security and see nothing but a white screen. The app appears to load but no cont...

Nginx 502 Bad Gateway: PHP-FPM Fix Guide

Seeing a 502 Bad Gateway error from Nginx usually means it can't reach PHP-FPM. This is common af...

BitLocker Connection Timeout Troubleshooting Checklist

If BitLocker network unlock fails with a timeout error, the issue is typically in the network pat...

Fix Outlook High CPU Usage Caused by Antivirus Scanning

Symptoms and Likely Cause

You notice Outlook consuming 50% or more CPU, making your syste...

Fix 'Token Expired' in Microsoft Teams Without Reinstalling

You're in a meeting, or trying to sign in, and Microsoft Teams says your token has expired. The k...