Hello,
Thank you for posting in the Microsoft Community forum.
According to my research, Windows Server 2012 R2 does not support Mobile Device Management (MDM) policies. The MDM feature, as well as certain policies such as "Enable automatic MDM registration with Default Microsoft Entra credentials," are primarily targeted at end-user client operating systems, such as Windows 10/11, rather than server operating systems.
If you need to manage Windows Server 2012 R2 devices, you might consider using Microsoft Defender for Endpoint (MDE) for security management policies.
For more information, please follow this article:
Reference:
Mobile Device Management overview | Microsoft Learn
Best regards
Jacen
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