How to Determine if Microsoft Defender Endpoint (Windows Security) is Operating on Your PC

Step 1:  

Click the “Show Hidden Items” in the Systray in the bottom right of Windows 10/11 

Click the Microsoft Defender Icon to open the Windows Security (Defender ATP) application.   

Step 2:  

Click "Open" to open the Windows Security (Defender ATP) application. 

Step 3:

Click Virus & Threat Protection from the left-side menu. 

Step 4:

Click Manage settings under Virus & threat protection settings. 

Step 5:

If the text says “This setting is managed by your administrator,” Windows Defender ATP is operating on your system.