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

Command Prompt Setup Guide for Beginners

What is Command Prompt?

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

Fix Windows Defender Not Working After Update

After a Windows update, you might find that Windows Defender (Microsoft Defender Antivirus) is di...

Fix Windows Search 404 Not Found Error via Registry

If Windows Search returns a '404 Not Found' error when you try to open the search pane or run a q...

Fix Missing Windows Security After Update

After a Windows update, you might find that Windows Security (formerly Windows Defender) is missi...

Fix Windows Search 502 Bad Gateway Network Config

You search for a file in Windows and get a "502 Bad Gateway" error. This usually means Windows Se...

Checklist to Resolve Windows Search Authentication Failed

You open Windows Search, type a query, and get an error like “Windows Search authentication faile...