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

How to Install PowerShell on Ubuntu

If you need to run PowerShell scripts on Ubuntu, you can install it via Microsoft's official repo...

Fixing GitHub Actions Permission Denied for Git Commands

How to Fix Chrome Connection Refused Error

When you see 'ERR_CONNECTION_REFUSED' in Chrome, it means the browser tried to connect to a serve...

Fix Windows Security Invalid Configuration Error Without Reinstalling

You open Windows Security and see the message: "Invalid configuration" or "Something went wrong. ...

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...

Checklist for Fixing Windows Security Startup Failure

When Windows Security (formerly Windows Defender) fails to start at boot, you may see an error li...