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

Windows Security 404 Not Found: Setup and Fix Guide

When you open Windows Security (formerly Windows Defender) and see a blank page or a '404 Not Fou...

Fix Windows Terminal Not Working After Update

After a Windows or Terminal update, you might see a blank window, crash on launch, or error messa...

Fix PowerShell Proxy Authentication Failed Errors

Check If Your Windows License Is Retail or OEM

If you're troubleshooting activation issues or planning to transfer Windows to a new computer, kn...

Windows Update Cannot Connect to Update Server: Fixes

When Windows Update shows “cannot connect to update server,” you may see error codes like 0x80072...

Fix Windows Activation Blank Screen After Login

You log into Windows, but instead of your desktop, you see a blank screen—often with only a curso...