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Note
- System Extensions and DriverKit. System extensions on macOS Catalina allow software like network extensions and endpoint security solutions to extend the functionality of macOS without requiring kernel-level access. DriverKit provides a fully modernized replacement for IOKit to create device drivers. System extensions and drivers built with DriverKit run in user space, where they can’t.
- The Deployment configuration builds a Universal Binary version suitable for distribution. Both configurations link against the Mac OS 10.4 SDK. Files in a kernel extension (kext) bundle have to be set as follows: owner: root - read/write group: wheel - read only others: read only.
- Network Extensions. Network extension apps such as content filters, DNS proxies, and VPN clients can now be distributed to a user’s Mac as system extensions on macOS Catalina. Learn more about NetworkExtension. Endpoint Security.
macOS kernel extensions are being replaced with system extensions. For more information, see Support Tip: Using system extensions instead of kernel extensions for macOS Catalina 10.15 in Intune.
On macOS devices, you can add kernel extensions and system extensions. Both kernel extensions and system extensions allow users to install app extensions that extend the native capabilities of the operating system. Kernel extensions execute their code at the kernel level. System extensions run in a tightly controlled user-space.
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To add extensions that are always allowed to load on your devices, use Microsoft Intune. Intune uses 'configuration profiles' to create and customize these settings for your organization's needs. After you add these features in a profile, you then push or deploy the profile to macOS devices in your organization.
This article describes system extensions and kernel extensions. It also shows you how to create a device configuration profile using extensions in Intune.
System extensions
System extensions run in the user space, and don’t access the kernel. The goal is to increase security, provide more end user control, and limit kernel level attacks. These extensions can be:
- Driver extensions, including drivers to USB, network interface cards (NIC), serial controllers, and human interface devices (HID)
- Network extensions, including content filters, DNS proxies, and VPN clients
- Endpoint security extensions, including endpoint detection, endpoint response, and antivirus
System extensions are included in an app's bundle, and installed from the app.
For more information on system extensions, see system extensions (opens Apple's web site).
Kernel extensions
Kernel extensions add features at the kernel-level. These features access parts of the OS that regular programs can't access. Your organization may have specific needs or requirements that aren't available in an app, a device feature, and so on.
For example, you have a virus scanning program that scans your device for malicious content. You can add this virus scanning program's kernel extension as an allowed kernel extension in Intune. Then, 'assign' the extension to your macOS devices.
With this feature, administrators can allow users to override kernel extensions, add team identifiers, and add specific kernel extensions in Intune.
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For more information on kernel extensions, see kernel extensions (opens Apple's web site).
Prerequisites
- This feature applies to:
- macOS 10.13.2 and newer (kernel extensions)
- macOS 10.15 and newer (system extensions)
From macOS 10.15 to 10.15.4, kernel extensions and system extensions can run side by side. - To use this feature, devices must be:
- Enrolled in Intune using Apple's Device Enrollment Program (DEP). Automatically enroll macOS devices has more information.OR
- Enrolled in Intune with 'user approved enrollment' (Apple's term). Prepare for changes to kernel extensions in macOS High Sierra (opens Apple's web site) has more information.
What you need to know
- Unsigned legacy kernel extensions and system extensions can be added.
- Be sure to enter the correct team identifier and bundle ID of the extension. Intune doesn't validate the values you enter. If you enter wrong information, the extension won't work on the device. A team identifier is exactly 10 alphanumeric characters long.
Note
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Apple released information regarding signing and notarization for all software. On macOS 10.14.5 and newer, kernel extensions deployed through Intune don't have to meet Apple's notarization policy.
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For information on this notarization policy, and any updates or changes, see the following resources:
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- Notarizing your app before distribution (opens Apple's web site)
- Prepare for changes to kernel extensions in macOS High Sierra (opens Apple's web site)
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Create the profile
- Sign in to the Microsoft Endpoint Manager admin center.
- Select Devices > Configuration profiles > Create profile.
- Enter the following properties:
- Platform: Select macOS
- Profile: Select Extensions.
- Select Create.Combine photos app mac. If this option is dimmed, make sure that the file you have open is a PDF. To save, choose File Export as PDF.
- In Basics, enter the following properties:
- Name: Enter a descriptive name for the policy. Name your policies so you can easily identify them later. For example, a good policy name is macOS: Add antivirus scanning to kernel extensions on devices.
- Description: Enter a description for the policy. This setting is optional, but recommended.
- Select Next.
- In Configuration settings, configure your settings:
- Select Next.
- In Scope tags (optional), assign a tag to filter the profile to specific IT groups, such as
US-NC IT Team
orJohnGlenn_ITDepartment
. For more information about scope tags, see Use RBAC and scope tags for distributed IT.Select Next. - In Assignments, select the users or groups that will receive your profile. For more information on assigning profiles, see Assign user and device profiles.These updates are made available once a year and introduce more pronounced changes than regular patches. You can discover the latest version of macOS by visiting.Be aware that it’s difficult to downgrade your Mac to the previous version of macOS. If you turn it off, you will have to install these updates manually via Software Update instead. Make sure any software that you rely on is compatible with the latest version of macOS before you take the plunge. How to Upgrade macOS to the Next Major VersionUpgrading macOS is different from updating it because you move from one major version to the next. These include updates for the built into macOS.We recommend leaving automatic updates enabled so that your Mac remains secure and all macOS features work as advertised. How to download apps on macos.Select Next.
- In Review + create, review your settings. When you select Create, your changes are saved, and the profile is assigned. The policy is also shown in the profiles list.
Next steps
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After the profile is created, it's ready to be assigned. Next, assign the profile and monitor its status.