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

Fix PowerShell 404 Not Found When Downloading File

You run an Invoke-WebRequest or Start-BitsTransfer command in PowerShel...

Fix Windows Security DNS Errors After a Windows Update

After a recent Windows update, you may see a DNS error inside Windows Security (formerly Windows ...

Command Prompt Setup Guide for Beginners

What is Command Prompt?

Command Prompt is a text-based interface in Windows that lets you...

UFW Port Closed Despite Allow Rule: Fixes

You've added a UFW allow rule for a port, but a port scan or service test shows the port is still...

Fix Microsoft Store Port Error After Reinstall

If you uninstalled and reinstalled the Microsoft Store and now see a port error (e.g., 'Port alre...

PowerShell 502 Bad Gateway: A Troubleshooting Checklist

When a PowerShell script or command returns a 502 Bad Gateway error, it usually means the web ser...