1. A recent issue has emerged where macOS devices using stealth mode become non-compliant after upgrading to macOS 15. This problem arises when the stealth mode setting is enabled in compliance policies. Users can mitigate the issue by adjusting compliance settings or delaying the upgrade to macOS 15.2.

macOS 15 Upgrade: Stealth Mode Compliance Issues
Attention macOS users! A known issue has surfaced regarding compliance for devices using Stealth Mode after upgrading to macOS 15. This development has implications for security and device management.
What’s New?
After upgrading to macOS 15, some devices with Stealth Mode enabled may report a non-compliant status. This situation arises due to the compliance policy settings located under System Security. Stealth Mode prevents devices from responding to ping requests or connection attempts, enhancing security.
“When stealth mode is enabled, the Mac devices do not respond to either ‘ping’ requests or connection attempts.”
Major Updates
Users experiencing compliance issues can mitigate them by adjusting their device compliance policy. Specifically, changing the Stealth Mode setting to “Not Configured” for devices running macOS 15 and later is recommended. This adjustment allows users to maintain Stealth Mode functionality through a separate device configuration policy.
To enable Stealth Mode, navigate to the macOS settings catalog under Networking > Firewall. This allows for continued use of Stealth Mode without compliance errors.
What’s Important to Know?
If you prefer to delay the upgrade to macOS 15, you can configure software update delay restrictions. This setting will postpone the macOS 15 upgrade for a specified period, giving users time to adjust their compliance policies.
“If you want to prevent devices from upgrading to macOS 15, you can configure software update delay restrictions.”
As the Intune Support Team continues to monitor this issue, they encourage users to stay updated. For further questions or comments, users can reach out via the Microsoft Tech Community or on X@IntuneSuppTeam.
In conclusion, while the upgrade to macOS 15 brings new features, it also introduces challenges for those using Stealth Mode. Adjusting compliance policies and understanding workarounds will be essential for maintaining device security and compliance.
From the Intune Customer Success articles