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

Setup Windows Defender to Trust an SSL Certificate

If you're running a local development server or an internal application with a self-signed or pri...

Fix 'Windows Defender Not Recognized' Error in Command Prompt

Fix Windows Defender Real-Time Protection Authentication Failed

When you try to turn on Windows Defender real-time protection, you might see an error saying some...

How to Fix Windows Security Version Mismatch Configuration Error

You may see a “version mismatch” or “configuration error” in Windows Security (formerly Windows D...

Fix Windows Update 404 Not Found Using Command Prompt

If you see a 404 error when checking for Windows updates, it usually means the update files canno...