Does Microsoft Authenticator Register an Android Device in Entra ID?

MD-102 By islever Editorial Last updated Sep 23, 2026

Short answer

A Yes; signing in with a work or school account in the Microsoft Authenticator app registers Android Device1 in the contoso.com Microsoft Entra tenant, so the goal is met.

Question

Note: This section contains one or more sets of questions with the same scenario and problem. Each question presents a unique solution to the problem. You must determine whether the solution meets the stated goals. More than one solution in the set might solve the problem. It is also possible that none of the solutions in the set solve the problem. After you answer a question in this section, you will NOT be able to return. As a result, these questions do not appear on the Review Screen. You have a Microsoft Entra tenant named contoso.com. You purchase an Android device named Device1. You need to register Device1 in contoso.com. Solution: You use the Microsoft Authenticator app. Does this meet the goal?

Yes Correct Answer
No

Key Takeaways

The exam tests the difference between registering a device in Entra ID and merely performing MFA, while the common trap is assuming the Authenticator app can only do multi-factor authentication and passwordless sign-in.

This MD-102 scenario asks whether using the Microsoft Authenticator app satisfies the requirement to register an Android device named Device1 in the contoso.com Microsoft Entra tenant. It does — Microsoft officially lists the Authenticator app alongside Company Portal as a supported way to create an Entra registered (workplace-joined) device identity on Android.

Common mistake: The most common wrong answer is B ("No"), because test-takers remember the Authenticator app only as an MFA/passwordless tool and forget that signing in with a work or school account inside Authenticator also creates an Entra registered device identity.

Expert Analysis

Why the Answer Is Correct

Registering (not joining) an Android device in Microsoft Entra ID creates a work or school identity on the device — a workplace join that leaves the device in the user's personal ownership. Microsoft documents three client-side paths to reach that state on Android: the Settings app, the Microsoft Authenticator app, or a third-party MDM/product. In the Authenticator app the user adds a work or school account under app settings, and the sign-in flow provisions the Entra registered device object in contoso.com. Since the question only requires registration of Device1 — not Entra join, not Intune enrollment, and not compliance — the Authenticator-based solution fully meets the stated goal, making "Yes" (A) the correct choice.

Why the Other Options Are Wrong

Option B ("No") rests on an outdated assumption that Authenticator is strictly an MFA and passwordless authenticator. While that is its headline function, the same app performs the device registration handshake when a work account is added on Android or iOS. The distractor wording pushes candidates toward Company Portal as the "only" enrollment app, but Company Portal is an alternative method, not an exclusive one — the question asks whether the given solution meets the goal, and it does. Nothing in the scenario requires device join, conditional access compliance, or Intune management, so no additional tooling is needed.

Community Comment Notes

GamingFuntime1985 enumerates the three supported registration methods and highlights the Authenticator route with "Microsoft Authenticator app (app settings-Work Or School Account-Device Registration)", matching the official documentation. ExamBud agrees that "Both Company Portal and MS Authenticator answers are correct" and links the Entra device registration concept page that lists "iOS/Android – Company Portal or Microsoft Authenticator app". RJTW070 votes B, arguing that "The Microsoft Authenticator app is used for multi-factor authentication (MFA)", and Ayind3 simply answers "Company Portal"; both reflect the MFA-only misconception. The 55/45 vote split for B shows the community majority is misreading the capability, but Microsoft's own registration documentation supports answer A.

Official Reference

https://learn.microsoft.com/en-us/entra/identity/devices/concept-device-registration

This link opens the official vendor documentation in a new tab.

Exam Strategy

Always separate the verbs in MD-102 device questions: register (Entra registered / workplace join), join (Entra joined), and enroll (Intune managed) have different supported tools. If the scenario only says "register Device1 in contoso.com," an app listed under the registration methods — Authenticator or Company Portal — is sufficient, so answer "Yes."

Frequently Asked Questions

Does the Microsoft Authenticator app really register a device in Microsoft Entra ID?

Yes. Microsoft's device registration documentation lists the Authenticator app for iOS/Android, so adding a work or school account creates an Entra registered device object.

Why is answering "No, use Company Portal" wrong in this MD-102 scenario?

Company Portal is another valid method, not the only one. The question only asks whether the Authenticator solution meets the registration goal, and it does.

More MD-102 FAQ →

Community Votes

55%

45%

55% of anonymous learners picked answer B. Votes are pick records left by other test-takers — they are not the verified answer.

Discussion 5 contributions

Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.

From public community threads 5

GamingFuntime1985 👍 3 Answered A

YES. 1. Using the Settings app. 2 Using the Microsoft Authenticator app (app settings-Work Or School Account-Device Registration). 3 Using a third-party product
Meek_Learner 👍 2

Using the Microsoft Authenticator app does not meet the goal of registering Device1 in contoso.com. The Microsoft Authenticator app is primarily designed for multi-factor authentication (MFA) and passwordless sign-in, not for device registration in a Microsoft Entra tenant. To register an Android device like Device1 in contoso.com, you would typically use one of the following methods: 1. Microsoft Intune Company Portal app: This is the recommended method for enrolling personal or BYOD Android devices. 2. Android Enterprise enrolment: For corporate-owned devices, you might use methods like QR code scanning or zero-touch enrolment, depending on the specific Android Enterprise deployment scenario.
ExamBud 👍 2 Answered A

Both Company Portal and MS Authenticator answers are correct. Please check documentation: https://learn.microsoft.com/en-us/entra/identity/devices/concept-device-registration#:~:text=iOS/Android%20%E2%80%93%20Company%20Portal%20or%20Microsoft%20Authenticator%20app
RJTW070 👍 2 Answered B

The Microsoft Authenticator app is used for multi-factor authentication (MFA) and passwordless sign-in, but it does not register a device in Microsoft Entra ID (formerly Azure AD).
Ayind3 👍 4 Answered B

Company Portal

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