Windows 10 devices. I have device (security) group in Intune\MEM, I'm seeing same machine listed multiple times when I click the group. I'm already using the steps which is included in link which you have provided, but it deletes systems beyond 90 days.
Thats totally true but when looking at one of the responses of Sohel he is talking about he could notice a user and system account listed. That behavior is seen at device configuration profiles...