Hello @Hunter Raber ,
Thank you for reaching out to Microsoft QnA forum. I would like to confirm that currently Mac OS devices can only be incorporated with Microsoft Entra ID as Microsoft Entra ID Registered Device using Company Portal app and to achieve Single Sign-On (SSO) on Mac machines with Microsoft Entra ID, you can use the Microsoft Enterprise SSO plug-in for Apple devices. Below are the necessary details about the same:
- Prerequisites: The device must support and have an installed app that has the Microsoft Enterprise SSO plug-in for Apple devices. For iOS 13.0 and later, this is the Microsoft Authenticator app. For macOS 10.15 and later, this is the Intune Company Portal app.
- Enable the SSO plug-in: The device must be enrolled in Mobile Device Management (MDM), for example, through Microsoft Intune. Configuration must be pushed to the device to enable the Enterprise SSO plug-in.
- Use the SSO plug-in in your application: The Microsoft Enterprise SSO plug-in provides SSO for Microsoft Entra accounts across all applications that support the Apple Enterprise SSO feature. It extends SSO to applications that don’t yet use the Microsoft Authentication Library (MSAL) and to applications that use OAuth 2, OpenID Connect, and SAML.
Please note that some of the features are still under development, and the use of Platform SSO features is not yet supported for Mac devices. More information can be found on following document/articles:
- Microsoft Entra registered devices
- Microsoft Enterprise SSO plug-in for Apple devices.
- Coming Soon – Platform SSO for macOS.
Please "Accept the answer" if the information helped you. This will help us and others in the community as well.