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

Troubleshoot 502 Bad Gateway with Curl Commands

A 502 Bad Gateway error means your server (gateway) got an invalid response from an upstream serv...

Fix Firefox Profile Missing on Linux Terminal

If Firefox starts with a blank profile or shows a 'profile missing' error on Linux, the profile f...

Reset Windows Defender Settings via Command Line

If Windows Defender is misbehaving—showing false positives, missing updates, or refusing to run—r...

Command Prompt Dependency Conflict Troubleshooting Checklist

Fix Windows Terminal Startup Folder Not Working

You set a custom startup folder in Windows Terminal, but it keeps opening to the default location...

How to Fix PowerShell Port Already Allocated Error

When you try to start a TCP listener or run a script that binds to a specific port in PowerShell,...