Microsoft Intune Mobile Device Management (MDM) configuration

Microsoft Intune is a cloud-based service focused on mobile device management (MDM) and mobile application management (MAM). It’s a core component of Microsoft’s Unified Endpoint Management (UEM) strategy, helping organizations manage and secure endpoints, configure policies, and ensure compliance without compromising the user experience.
For any organization looking to enforce a robust Zero Trust security model and efficiently manage its digital estate, mastering Intune MDM is essential. This guide will walk you through the comprehensive, step-by-step configuration process, detail the immense advantages it offers, and demonstrate how it acts as a force multiplier for organizational efficiency.

🛠️ Phase 1: Prerequisites and Initial Intune Setup
Before diving into the technical configuration, a few critical prerequisites must be addressed to ensure a smooth deployment.

Licensing and Subscription
Microsoft Intune is primarily licensed through:

Standalone subscription.
Enterprise Mobility + Security (EMS) E3 or E5.
Microsoft 365 E3, E5, F1, F3, or Business Premium subscriptions.
Ensure all users who will have devices managed by Intune are assigned the appropriate licenses in the Microsoft 365 or Microsoft Entra admin center.

Administrator Roles and Permissions
You will need an account with Microsoft Entra Global Administrator or Intune Service Administrator rights to perform the initial setup and configuration steps.

Setting the MDM Authority
This is the most crucial initial step and, for new Intune tenants, it is often set automatically. The MDM authority determines where devices check in for management policies.

Action: Sign in to the Microsoft Intune admin center (formerly Endpoint Manager admin center).
Navigation: Go to Devices or look for a banner prompt if the authority has not been set.
Configuration: The MDM authority should be set to Intune MDM Authority. For organizations migrating from older Office 365 Basic Mobility and Security, this is where you enable coexistence and switch the authority to Intune.

Group Structure and Planning
Intune relies heavily on Microsoft Entra security groups for targeting policies, applications, and configurations. It is best practice to define your groups before assigning policies.

Example Groups:
Intune_Users_All: For policies applicable to all users.
Intune_Devices_Windows: For Windows-specific policies.
Intune_Pilot_Group: A small group of users for testing new policies.

Connecting Device Platforms (Connectors and Tokens)
Intune requires connecting to external services to manage iOS/iPadOS, macOS, and Android devices.
1.1. iOS/iPadOS and macOS Management (Apple MDM Push Certificate)
To manage Apple devices, you must obtain and renew an Apple MDM Push Certificate.

Navigation: In the Intune admin center, go to Tenant administration > Connectors and tokens > Apple MDM Push Certificate.
Process: Follow the steps to download a certificate signing request file from Microsoft, upload it to the Apple Push Certificates Portal to generate the certificate, and then upload the final .pem certificate back to Intune. This establishes the secure connection between Intune and Apple’s Push Notification Service (APNS).
1.2. Android Management (Managed Google Play)
For managing corporate-owned and personally-owned Android devices securely (specifically using Android Enterprise), you must integrate with Managed Google Play.
Navigation: Tenant administration > Connectors and tokens > Managed Google Play.
Process: Select I agree and follow the link to connect your Intune tenant to an existing or new Google account.

Configuring Device Enrollment Restrictions
Device enrollment restrictions allow administrators to control which types of devices and how many devices a user can enroll.

Navigation: Devices > By platform > Windows/iOS/Android > Device onboarding > Enrollment restrictions.
Device Type Restrictions:
Define platform and operating system versions that are allowed or blocked.
Crucially, you can block personally-owned devices (BYOD) for corporate-owned devices (COD) only scenarios, or allow them selectively.
Device Limit Restrictions:
Set the maximum number of devices a single user can enroll (e.g., limit to 5).

Setting Up Automatic Enrollment (Windows)
For a seamless Windows device enrollment experience, especially for new devices via Windows Autopilot, you must configure Automatic Enrollment. This uses Microsoft Entra ID (formerly Azure Active Directory).

Navigation: Devices > By platform > Windows > Device onboarding > Automatic Enrollment.
Configuration:
MDM User Scope: Set to All or Some (and specify the corresponding security group, e.g., Intune_Users_All). This determines which users’ devices will automatically enroll in MDM when they join Microsoft Entra ID.
MAM User Scope: Typically set to None in a full MDM deployment scenario, unless you are exclusively using MAM policies.
Save.
🔒 Phase 3: Security and Compliance Policies
The core value of Intune MDM is its ability to enforce security standards and compliance across a diverse fleet of devices.

Creating Device Compliance Policies
Compliance policies are non-negotiable standards that a device must meet to be considered “compliant” and, in many cases, to gain access to corporate resources (via Conditional Access).

Navigation: Devices > Compliance > Policies > Create Policy.
Platform Selection: Choose the relevant platform (e.g., Windows, iOS/iPadOS, Android).
Common Compliance Settings Description
Require a Password Enforce minimum password length, complexity, and expiration time.
Require Encryption Mandate full device encryption (e.g., BitLocker on Windows, FileVault on macOS).
Require Anti-Malware Check for the presence of a security application (e.g., Microsoft Defender).
Minimum OS Version Block devices running older, vulnerable operating system versions.
Jailbroken/Rooted Devices Automatically mark devices with compromised security configurations as non-compliant. Action for Non-Compliance: Define actions for non-compliant devices, such as sending email notifications, marking the device for retirement, or, most importantly, enforcing a grace period before blocking access.

Deploying Device Configuration Profiles
Configuration profiles are used to deploy settings, restrictions, and features to devices. These policies enforce the desired state of a managed device.

Navigation: Devices > Configuration > Policies > Create Profile.
Platform and Profile Type: Select the platform (e.g., Windows 10 and later) and the profile type (e.g., Settings catalog or Templates like Device restrictions).
Example Configuration Profiles Description
Device Restrictions Block access to features like the camera, Bluetooth, or removable storage.
Wi-Fi/VPN Profiles Automatically push pre-configured corporate Wi-Fi and VPN connection settings.
Email Profiles Deploy corporate email account settings (Exchange ActiveSync) to devices without requiring manual setup.
Security Baselines Pre-configured, recommended settings from Microsoft for hardening Windows devices (highly recommended).

Implementing Conditional Access
Conditional Access (CA) is the policy engine that ties compliance and identity management together. It ensures that only compliant users on compliant devices can access corporate resources like SharePoint or Exchange Online.

Navigation: Navigate to the Microsoft Entra admin center > Protection > Conditional Access.
Policy Rule: Create a new policy that, for example:
Users/Groups: Targets All users (or a specific security group).
Cloud Apps: Targets All cloud apps (or specific apps like Exchange Online).
Conditions: Targets Device platforms (e.g., iOS, Android, Windows).
Grant Access: Require device to be marked as compliant.
This final step creates the critical security loop: Intune confirms the device is compliant, and Conditional Access uses that signal to either grant or deny access to the data.

✨ Phase 4: Key Advantages and Organizational Impact of Intune MDM
The benefits of a well-configured Intune environment extend far beyond simple device control, driving significant value across the entire organization.

Enhanced Security and Data Protection
In a world defined by cyber threats and regulatory compliance (like GDPR or HIPAA), Intune provides a necessary shield.

Data Loss Prevention (DLP): Through Mobile Application Management (MAM), Intune can prevent corporate data from being copied/pasted into personal apps (e.g., a personal email account) even on a personal device (BYOD), protecting sensitive information at the application layer.
Zero Trust Enforcement: By combining device compliance and Conditional Access, Intune ensures that every access attempt is verified. If a device falls out of compliance (e.g., jailbroken or running an outdated OS), access is immediately revoked, limiting the attack surface.
Remote Actions: In the event of device loss or theft, IT administrators can perform Remote Wipe (factory reset the device) or Retire (remove only corporate data and apps) to protect proprietary information.

Simplified and Unified Endpoint Management
Intune centralizes the management of diverse platforms, drastically reducing administrative overhead.

Single Console: IT teams manage all corporate and personal devices (Windows, Mac, iOS, Android) from the single, cloud-based Microsoft Intune admin center. This eliminates the need for disparate tools for each operating system.
Automated Provisioning (Windows Autopilot): Intune integrates with Windows Autopilot to allow new corporate-owned Windows devices to be shipped directly to the employee. The user simply signs in, and Intune automatically applies all security policies, configurations, and apps, turning hours of manual IT work into minutes of self-service.
Efficient App Deployment: Administrators can easily deploy, update, and remove required applications (both Microsoft 365 and Line-of-Business apps) to targeted user groups, ensuring everyone has the necessary, up-to-date tools.

Increased Employee Productivity and Flexibility
Intune supports a modern, flexible workforce by providing secure, reliable access.

Seamless BYOD Adoption: Intune allows organizations to embrace Bring Your Own Device (BYOD) securely. Employees use their preferred devices, boosting satisfaction and productivity, while IT ensures corporate data is protected without having full control over the user’s personal files and photos (MAM).
Immediate Access to Resources: Automated configuration profiles (Wi-Fi, VPN, Email) mean new or migrated devices are operational almost instantly, minimizing downtime and reducing support tickets.

💻 Phase 5: Advanced Configuration and Best Practices
To maximize the long-term effectiveness of your Intune MDM deployment, consider these advanced steps.

Mobile Application Management (MAM)
For BYOD scenarios, MAM is the key to protecting data without enrolling the entire device.

Concept: MAM policies (App Protection Policies) apply controls to the corporate data within specific apps (e.g., Outlook, Teams) without touching personal data.
Configuration: Apps > App protection policies > Create policy.
Key Settings:
Require a PIN to access the app.
Block “Save As” to local storage.
Restrict cut, copy, and paste functions between managed and unmanaged apps.

Utilizing Windows Autopilot and Enrollment Profiles
For corporate-owned Windows devices, Autopilot is the superior deployment method.

Process:

Register devices in the Autopilot service (via a partner or a script).
Create an Autopilot Deployment Profile in Intune (Devices > Windows > Windows Enrollment).
Assign the profile to the devices.
Result: Provides a smooth, zero-touch provisioning experience for the end-user.

Ongoing Monitoring and Reporting

Intune’s reporting is critical for maintaining a compliant environment.

Endpoint Analytics: Provides deep insights into device boot times, app reliability, and help desk ticket drivers, allowing IT to proactively improve user experience.
Compliance Reports: Regularly check the Device compliance reports to quickly identify any non-compliant devices and investigate the cause.

Conclusion: Intune—The Foundation of the Modern Workplace
Microsoft Intune is more than just a device management tool; it is the linchpin that secures and enables the modern, flexible, and hybrid workforce. By diligently following these step-by-step configuration phases—from setting the MDM authority and connecting platforms to deploying granular security and compliance policies—your organization can establish a unified, secure, and efficient endpoint management environment.
Intune’s ability to protect sensitive data through Conditional Access and MAM, while simplifying IT operations via automation and a single admin console, translates directly into a more resilient security posture and a more productive employee base. Mastering Intune MDM is not a luxury; it is a fundamental requirement for success in today’s cloud-first world.
Do you have specific questions about configuring Conditional Access with Intune Compliance, or would you like a deeper dive into the Mobile Application Management (MAM) policy creation process?