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Common ways to use Conditional Access with Intune

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There are two types of Conditional Access policies you can use with Intune: device-based Conditional Access and app-based Conditional Access. To support each, you'll need to configure the related Intune policies. When the Intune policies are in place and deployed, you can then use Conditional Access to do things like allow or block access to Exchange, control access to your network, or integrate with a Mobile Threat Defense solution.

The information in this article can help you understand how to use the Intune mobile device compliance capabilities and the Intune mobile application management (MAM) capabilities.

Note

Conditional Access is a Microsoft Entra capability that is included with a Microsoft Entra ID P1 or P2 license. Intune enhances this capability by adding mobile device compliance and mobile app management to the solution. The Conditional Access node accessed from Intune is the same node as accessed from Microsoft Entra ID.

Device-based Conditional Access

Intune and Microsoft Entra ID work together to make sure only managed and compliant devices can access your organization's email, Microsoft 365 services, Software as a service (SaaS) apps, and on-premises apps. Additionally, you can set a policy in Microsoft Entra ID to only enable domain-joined computers or mobile devices that are enrolled in Intune to access Microsoft 365 services.

With Intune, you deploy device compliance policies to determine if a device meets your expected configuration and security requirements. The compliance policy evaluation determines the device's compliance status, which is reported to both Intune and Microsoft Entra ID. It's in Microsoft Entra ID that Conditional Access policies can use a device's compliance status to make decisions on whether to allow or block access to your organization's resources from that device.

Device-based Conditional Access policies for Exchange online and other Microsoft 365 products are configured through the Microsoft Intune admin center.

Note

When you enable Device Based Access for content that users access from browser apps on their Android personally-owned work profile devices, users that enrolled before January 2021 must enable browser access as follows:

  1. Launch the Company Portal app.
  2. Go to the Settings page from the menu.
  3. In the Enable Browser Access section, tap the ENABLE button.
  4. Close and then restart the browser app.

This enables access in browser apps, but not to browser WebViews that open within apps.

Applications available in Conditional Access for controlling Microsoft Intune

When you configure Conditional Access in the Microsoft Entra admin center, you have two applications to choose from:

  1. Microsoft Intune - This application controls access to the Microsoft Intune admin center and data sources. Configure grants/controls on this application when you want to target the Microsoft Intune admin center and data sources.
  2. Microsoft Intune Enrollment - This application controls the enrollment workflow. Configure grants/controls on this application when you want to target the enrollment process. For more information, see Require multi-factor authentication for Intune device enrollments.

Conditional Access based on network access control

Intune integrates with partners like Cisco ISE, Aruba Clear Pass, and Citrix NetScaler to provide access controls based on the Intune enrollment and the device compliance state.

Users can be allowed or denied access to corporate Wi-Fi or VPN resources based on whether the device they're using is managed and compliant with Intune device compliance policies.

Conditional Access based on device risk

Intune partners with Mobile Threat Defense vendors that provide a security solution to detect malware, Trojans, and other threats on mobile devices.

How the Intune and Mobile Threat Defense integration works

When mobile devices have the Mobile Threat Defense agent installed, the agent sends compliance state messages back to Intune reporting when a threat is found on the mobile device itself.

The Intune and mobile threat defense integration plays a factor in the Conditional Access decisions based on device risk.

Conditional Access for Windows PCs

Conditional Access for PCs provides capabilities similar to those available for mobile devices. Let's talk about the ways you can use Conditional Access when managing PCs with Intune.

Corporate-owned

  • Microsoft Entra hybrid joined: This option is commonly used by organizations that are reasonably comfortable with how they're already managing their PCs through AD group policies or Configuration Manager.

  • Microsoft Entra domain joined and Intune management: This scenario is for organizations that want to be cloud-first (that is, primarily use cloud services, with a goal to reduce use of an on-premises infrastructure) or cloud-only (no on-premises infrastructure). Microsoft Entra join works well in a hybrid environment, enabling access to both cloud and on-premises apps and resources. The device joins to the Microsoft Entra ID and gets enrolled to Intune, which can be used as a Conditional Access criteria when accessing corporate resources.

Bring your own device (BYOD)

  • Workplace join and Intune management: Here the user can join their personal devices to access corporate resources and services. You can use Workplace join and enroll devices into Intune MDM to receive device-level policies, which are another option to evaluate Conditional Access criteria.

Learn more about Device Management in Microsoft Entra ID.

App-based Conditional Access

Intune and Microsoft Entra ID work together to make sure only managed apps can access corporate e-mail or other Microsoft 365 services.

Intune Conditional Access for Exchange on-premises

Conditional Access can be used to allow or block access to Exchange on-premises based on the device compliance policies and enrollment state. When Conditional Access is used in combination with a device compliance policy, only compliant devices are allowed access to Exchange on-premises.

You can configure advanced settings in Conditional Access for more granular control such as:

  • Allow or block certain platforms.

  • Immediately block devices that aren't managed by Intune.

Any device used to access Exchange on-premises is checked for compliance when device compliance and Conditional Access policies are applied.

When devices don't meet the conditions set, the end user is guided through the process of enrolling the device to fix the issue that is making the device noncompliant.

Note

Beginning in July of 2020, support for the Exchange connector is deprecated, and replaced by Exchange hybrid modern authentication (HMA). Use of HMA does not require Intune to setup and use the Exchange Connector. With this change, the UI to configure and manage the Exchange Connector for Intune has been removed from the Microsoft Intune admin center, unless you already use an Exchange connector with your subscription.

If you have an Exchange Connector set up in your environment, your Intune tenant remains supported for its use, and you’ll continue to have access to UI that supports its configuration. For more information, see Install Exchange on-premises connector. You can continue to use the connector or configure HMA and then uninstall your connector.

Hybrid Modern Authentication provides functionality that was previously provided by the Exchange Connector for Intune: Mapping of a device identity to its Exchange record. This mapping now happens outside of a configuration you make in Intune or the requirement of the Intune connector to bridge Intune and Exchange. With HMA, the requirement to use the ‘Intune' specific configuration (the connector) has been removed.

What's the Intune role?

Intune evaluates and manages the device state.

What's the Exchange server role?

Exchange server provides API and infrastructure to move devices to quarantine.

Important

Keep in mind that the user who's using the device must have a compliance profile and Intune license assigned to them so the device can be evaluated for compliance. If no compliance policy is deployed to the user, the device is treated as compliant and no access restrictions are applied.

Next steps

How to configure Conditional Access in Microsoft Entra ID

Set up app-based Conditional Access policies

How to create a Conditional Access policy for Exchange on-premises