A cloud-based identity and access management service for securing user authentication and resource access
@Sean Draves,Thanks for posting in Q&A.
From your description, I know you have trouble in Azure registration and Intune enrollment.
To clarify this issue, please check the following.
1.Please check whether the users have been assigned Azure AD Premium license
2.If you just want the device register in Microsoft Entra ID and not enroll in Intune, please check whether the Automatic Enrollment is correctly configured.
For the duplicate device issue, when a device is connected to Entra as Microsoft Entra Registered due to a user selecting "Add account to Windows", and you enable Microsoft Entra Joined, the device will be connected twice to Entra, and you will see two different computer objects for the same device name. This is documented in the FAQ: https://learn.microsoft.com/en-us/entra/identity/devices/faq#why-do-i-see-a-duplicate-microsoft-entra-registered-record-for-my-windows-10-11-microsoft-entra-hybrid-joined-device-in-the-microsoft-entra-devices-list
This dual state issue can be caused by old device records existing in Entra and can be resolved by deleting the device in Intune and deleting all records of the affected devices in Entra, and then re-enrolling the devices. If your devices change names, then they could appear multiple times.
Please also check whether you have followed the Microsoft Entra Registered scenarios
https://learn.microsoft.com/en-us/entra/identity/devices/concept-device-registration
Please check above information, if there is any update, feel free to let me know.
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