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

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...

Fix Outlook Reset Settings Permission Denied Error

Fix Windows Defender Invalid Configuration After Update

After a Windows update, you might open Windows Security and see a yellow warning: "Invalid config...

Resolving PowerShell Version Mismatch in Automation Scripts

You're running an automation script and get an error about a cmdlet not being recognized, or a pa...

How to Reinstall the Windows Security Module

If Windows Security won't open, shows errors, or you see "This app has been turned off" messages,...

Windows Update Pending Install Troubleshooting Checklist

If a Windows update shows "Pending install" and never completes, the system is stuck waiting. Thi...