Ensure "Allow Sign In" is set to "Blocked"

MediumLevel 1Manual reviewintune-macos

Description

This setting determines whether users are permitted to authenticate to third-party generative AI services through native macOS intelligence features. The benchmark marks this a Manual check of an Intune macOS policy setting that cannot be read from the endpoint with a script, so TMAegis lists it as a manual review item with the audit steps (the policy must be inspected in the Intune admin center or on the managed device).

How it is checked

Audit method: Manual review

This recommendation cannot be checked automatically. A scan lists it with these instructions when you pass --include-manual.

macOS: Intune admin center: Expand the Declarative Device Management (DDM) heading; Under the External Intelligence Settings subheading; Verify that Allow Sign In is present and set to Blocked. On the device: Double-click Management Profile; Under the Device Declarations section; Click External Intelligence Settings; Confirm Allow Sign-In is set to No

How it is fixed

Fix method: Guidance or infrastructure patch

Intune admin center: Select Declarative Device Management (DDM) then External Intelligence Settings; Check Allow Sign In; On the left side of the page set Allow Sign In to Blocked; Verify that Allow Sign In is present and set to Blocked

Properties

Operating systems: Any
Tags: intune-macosintunemanual-review
Reference: CIS Apple macOS 26 Tahoe Intune Benchmark v1.0.0 - 2.14.1.1 Ensure "Allow Sign In" is set to "Blocked"