As organizations continue moving toward cloud-first identity and device management, Microsoft Entra Join (formerly Azure AD Join) has become a core component of modern Windows management. Whether you’re deploying new cloud-managed devices or integrating an existing Active Directory environment with Microsoft Entra ID, a well-planned implementation is essential for security, scalability, and user experience.

This guide walks through everything a systems administrator needs to know to successfully deploy Microsoft Entra Join in a production environment—from planning and prerequisites to deployment, verification, troubleshooting, and security best practices.

What is Microsoft Entra Join?

Microsoft Entra ID (formerly Azure Active Directory (Azure AD)) is Microsoft’s cloud-based Identity and Access Management (IAM) platform. It enables organizations to securely authenticate users, devices, and applications while providing centralized identity management across Microsoft 365, Azure, SaaS applications, and on-premises environments.

Unlike traditional Active Directory Domain Services (AD DS), which primarily manages identities inside an organization’s local network, Microsoft Entra ID is designed for cloud and hybrid environments.

Microsoft Entra ID provides:

• User authentication
• Single Sign-On (SSO)
• Multi-Factor Authentication (MFA)
• Conditional Access
• Device Identity Management
• Identity Governance
• Privileged Identity Management (PIM)
• Application Management
• External Identity (B2B/B2C)

When a Windows device is Microsoft Entra Joined, the device becomes a trusted identity within the Microsoft Entra tenant. This allows administrators to apply security policies, Conditional Access, Intune management, and secure authentication without requiring a traditional on-premises Active Directory domain.

Microsoft Entra Join Overview

Microsoft supports three primary device registration models.

Join Type	Description	Recommended For
Microsoft Entra Registered	Personal/BYOD devices	Personal devices
Microsoft Entra Joined	Cloud-only organization devices	Cloud-first organizations
Hybrid Microsoft Entra Joined	Devices joined to on-prem AD and registered in Entra	Organizations using Active Directory

For a single device or small deployment, Microsoft Entra Join is typically the simplest and fastest option.

Supported Client Operating Systems

• Windows 10 Pro
• Windows 10 Enterprise
• Windows 10 Education
• Windows 11 Pro
• Windows 11 Enterprise
• Windows 11 Education

Windows Home editions cannot perform Microsoft Entra Join

Microsoft Entra Join for Small Environments

This guide provides an end-to-end, production-ready reference for setting up Microsoft Entra Join (formerly Azure AD Join) for single devices or small groups of devices using the Microsoft Azure Portal.

Prerequisites and Planning

System Requirements

• Operating Systems: Windows 10 (Pro/Enterprise/Education, version 1903 or later recommended) and Windows 11 (Pro/Enterprise/Education). Windows Server editions cannot be Entra Joined (use Domain Join or Azure Arc instead).
• Hardware: TPM 2.0 (Trusted Platform Module) is strongly recommended and required for Windows 11.

License Requirements

Microsoft Entra Join requires one of the following licenses for the users registering or joining the devices:

• Microsoft Entra ID Free (basic join functionality, though MDM auto-enrollment requires P1/P2).
• Microsoft Entra ID P1 or P2.
• Microsoft 365 Business Premium, E3, or E5.
• Microsoft 365 Academic (A3/A5).

Cloud-Only vs. Hybrid Scenarios

Cloud-Only (Microsoft Entra Join): In a cloud-only deployment, Windows devices are joined directly to Microsoft Entra ID without being connected to an on-premises Active Directory domain. Users sign in with their organizational Microsoft Entra credentials, enabling seamless access to Microsoft 365, Azure, and other cloud applications. This deployment model is ideal for organizations that have adopted a cloud-first strategy and do not rely on on-premises infrastructure. Devices can be managed through Microsoft Intune, while security is enforced using features such as Conditional Access, Multi-Factor Authentication (MFA), and device compliance policies. Cloud-only deployments are simpler to implement and maintain, making them an excellent choice for small businesses, remote workforces, and organizations building a modern IT environment.

Hybrid Microsoft Entra Join: Hybrid Microsoft Entra Join is intended for organizations that maintain an on-premises Active Directory while integrating with Microsoft Entra ID. In this configuration, devices remain joined to the local Active Directory domain and are automatically registered with Microsoft Entra ID through Microsoft Entra Connect Sync. This approach allows organizations to continue using traditional management tools, such as Group Policy, while benefiting from cloud services like Microsoft Intune and Conditional Access. Hybrid deployments are recommended when legacy line-of-business applications, file servers, or other on-premises resources require Kerberos or NTLM authentication against local domain controllers, enabling organizations to modernize their environment without immediately replacing their existing Active Directory infrastructure.

Step-by-Step Configuration

Verify Custom Domain

Before joining devices, ensure your primary user principal name (UPN) domain is verified in Entra ID so users can sign in cleanly (e.g., user@yourdomain.com instead of user@yourdomain.onmicrosoft.com).

Navigate to the Microsoft Entra admin center ([https://entra.microsoft.com](https://entra.microsoft.com)).

Go to Identity > Settings > Custom domain names.

Click + Add custom domain, enter your domain, and add the required TXT/MX records to your DNS registrar. Click Verify.

Configure Device Settings in Entra ID

Navigate to Identity > Devices > Overview > Device settings.

Configure the following parameters:

• Users may join devices to Microsoft Entra: Set to All or Selected (specify a pilot group if targeting a small rollout).
• Additional local administrators on Microsoft Entra joined devices: Select Selected and assign administrative rights to the IT admin or primary user if necessary.
• Require Multi-Factor Authentication to register or join devices: Set to Yes to enforce security during the join process.

Configure Automatic MDM Enrollment (Intune)

To ensure devices automatically enroll in Mobile Device Management (MDM) upon joining:

Navigate to Microsoft Intune admin center ([https://intune.microsoft.com](https://intune.microsoft.com)) or via Entra ID under Mobility (MDM and MAM).

Select Microsoft Intune.

Set MDM user scope to All or Some (target your pilot group).

Configure MDM terms of use URL and discovery URLs as defaulted.

Network and Firewall Requirements

Ensure the local network allows outbound HTTPS (Port 443) traffic to the following required endpoints during the out-of-box experience (OOBE) or settings menu:

• [https://enterpriseregistration.windows.net](https://enterpriseregistration.windows.net)
• [https://login.microsoftonline.com](https://login.microsoftonline.com)
• [https://device.login.microsoftonline.com](https://device.login.microsoftonline.com)
• [https://autologon.microsoftazuread-sso.com](https://autologon.microsoftazuread-sso.com) (for seamless SSO if hybrid)

Deployment Methods (Single or Small-Group Workflows)

For small groups or individual devices, manual enrollment via Windows Settings is the most efficient method.

Manual Enrollment Steps (End-User Workflow)

Power on a new or freshly reset Windows 10/11 device.

During the Out-Of-Box Experience (OOBE), at the “Sign in with Microsoft” screen, enter the organizational credentials (user@yourdomain.com).

Complete the Multi-Factor Authentication (MFA) prompt.

Alternatively, for an already running Windows device:

• Go to Settings > Accounts > Access work or school.
• Click + Connect.
• At the bottom of the window, click Join this device to Microsoft Entra ID.
• Enter corporate credentials and authenticate via MFA.
• Restart the machine and sign in using corporate credentials (AzureAD\email@domain.com or just user principal name).

Post-Configuration Verification

Verifying via Azure Portal

Navigate to Microsoft Entra ID > Devices > All devices.

Search for the device name or filter by Join type: Microsoft Entra joined.

Verify that the MDM column displays Microsoft Intune (confirming successful handoff).

Verifying via Command Line (On the Device)

Open Command Prompt or PowerShell on the target machine and run:

PowerShell

dsregcmd /status

• AzureAdJoined: Must read YES.
• DomainJoined: Reads NO (for cloud-only join).
• MDMUrl: Must point to the Intune enrollment endpoint.

Conclusion

In conclusion, Microsoft Entra Join provides a secure and efficient way to manage organizational devices while enabling modern identity and access management through Microsoft Entra ID. By carefully planning prerequisites, configuring the necessary settings in the Azure Portal, and validating each step of the deployment process, administrators can successfully onboard individual devices or small groups with minimal complexity. Following the recommended best practices for device compliance, Conditional Access, monitoring, and ongoing management helps ensure a secure, scalable, and well-governed environment. Whether deploying a cloud-only or hybrid solution, a structured implementation approach lays the foundation for reliable device management and stronger organizational security as your Microsoft ecosystem continues to grow.