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

Free Up Space from a Full Windows Update Cache

If you get a low disk space warning or notice your system drive is nearly full, the Windows Updat...

Fix Windows Security Real-Time Protection Not Working

If you see a yellow warning in Windows Security that says "Real-time protection is off" or it tur...

Checklist for Troubleshooting Windows Defender Configuration Issues

Windows Defender (now Microsoft Defender Antivirus) sometimes fails to apply settings or behaves ...

Fix Windows Security Service Unavailable After Update

After a Windows update, you might open Windows Security and see a message like “Security service ...

How to Fix Windows Update Access Denied Error in Command Prompt

Fix Windows Security Error 0x80073b01: App Install Blocked

When you try to install a Windows app from the Microsoft Store, you might see error code 0x80073b...