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175: Deploy macOS SSO extension

Overview​

Deploying the macOS Single Sign-On (SSO) extension using Microsoft Intune can streamline authentication processes for users and enhance security. Here's a detailed overview:

Steps to Deploy macOS SSO Extension​

  1. Prerequisites:

    • Ensure devices are running macOS 13.0 or newer.
    • Install the Microsoft Intune Company Portal app version 5.2404.0 or newer.

  2. Decide Authentication Method:

    • Choose between passwordless authentication, Microsoft Entra ID user accounts, or smart cards.

  3. Create Platform SSO Policy in Intune:

    • Navigate to the Intune admin center.
    • Go to Devices > Configuration profiles > Create profile.
    • Select macOS for the platform and Device features for the profile type.
    • Configure the SSO app extension settings¹.

  4. Deploy the Company Portal App:

    • Ensure the Company Portal app is deployed to all macOS devices.

  5. Enroll Devices and Apply Policies:

    • Enroll the macOS devices in Intune.
    • Assign the SSO policy to the relevant user groups.

  6. Confirm Settings on Devices:

    • Verify that the SSO settings are correctly applied on the devices.

Benefits​

  • Reduced Authentication Prompts: Users experience fewer sign-in prompts, enhancing productivity.
  • Enhanced Security: Supports passwordless authentication and integrates with Microsoft Entra ID for secure access.
  • Seamless User Experience: Users can sign in using their Microsoft Entra ID credentials and Touch ID.
  • Conditional Access: Ensures that only compliant devices can access corporate resources.

Drawbacks​

  • Compatibility Issues: Some older macOS versions may not support the latest SSO features.
  • Initial Setup Complexity: Requires careful configuration and testing to ensure seamless deployment.
  • Dependency on Microsoft Entra ID: Organizations must be using Microsoft Entra ID for full functionality.

Possible Impact on End Users​

  • Improved User Experience: Fewer sign-in prompts and easier access to resources.
  • Learning Curve: Users may need initial guidance on using new authentication methods like Touch ID.
  • Increased Security: Users benefit from enhanced security measures, reducing the risk of unauthorized access.

Tying to Zero Trust​

The deployment of the macOS SSO extension aligns with Zero Trust principles by:

  • Verifying Identity: Ensures that only authenticated users can access resources.
  • Conditional Access: Enforces policies that require devices to meet security standards before granting access.
  • Least Privilege Access: Limits access to resources based on user roles and compliance status.

Reference​