Question

You have onboarded 200 Windows 11 devices to Microsoft Defender for Endpoint by using a local script. A security analyst reports that one device does not appear in the Microsoft Defender portal device inventory, even though the onboarding script reportedly ran successfully. You need to confirm on the affected device whether the Defender for Endpoint sensor is actually reporting to the service before escalating the issue. What should you do on the device?

Accepted Answer

Run the Defender for Endpoint detection test PowerShell command that generates simulated activity and confirm the resulting event appears in the portal within a few minutes.

Answer

Re-run the same local onboarding script a second time to force the sensor to re-register.

Answer

Run a Microsoft Defender Antivirus quick scan and verify that the scan completes without threats.

Answer

Open Windows Security and confirm that real-time protection is toggled on.