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

Nginx 502 Bad Gateway: A Practical Troubleshooting Guide

Seeing a 502 Bad Gateway from Nginx usually means the upstream server (like PHP-FPM, uWSGI, or a ...

Resolving Windows Security Version Mismatch Errors

You open Windows Security and see an error like “This app can’t open because there’s a problem wi...

Microsoft Teams Stuck on Loading Screen: Quick Fixes

You open Microsoft Teams, but it stays on the spinning loading circle or a blank screen. This is ...

Fix Windows Search Dependency Conflict After Update

After a Windows update, you might find the search bar stops working, returns no results, or shows...

Fix 'Windows Security App Not Installed' on Windows 10

You open the Start menu, search for Windows Security, and nothing shows up. Or you see a message ...

Fix Windows Update SSL Certificate Errors Not Working