The most likely cause is that the iPhone is already enrolled in Apple Business Manager or another MDM solution. This error occurs because iOS enforces a strict single-MDM enrollment policy, meaning an existing MDM profile—whether from Apple Business Manager, a previous Intune tenant, or a third-party platform—blocks any new enrollment attempt. Intune cannot overwrite or merge with an existing profile; the old profile must be removed first, typically by wiping the device or releasing it from the original MDM. On the MD-102 exam, this scenario tests your understanding of Apple’s enrollment restrictions and the difference between user-initiated enrollment and automated device enrollment via ABM. A common trap is assuming the error means the device is already in Intune, when in fact it points to a conflicting MDM source. Memory tip: think “one MDM per iOS device” like a single key for one lock—no duplicates allowed.
MD-102 Manage and maintain devices Practice Question
This MD-102 practice question tests your understanding of manage and maintain devices. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
You are troubleshooting an iPhone that cannot enroll in Microsoft Intune. The user receives an error stating 'This device is already enrolled in another MDM.' What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The device is already enrolled in Apple Business Manager or another MDM.
The error 'This device is already enrolled in another MDM' indicates that the iPhone has an existing MDM profile that conflicts with Intune enrollment. This typically occurs when the device is already enrolled in Apple Business Manager (ABM) or another MDM solution, as iOS enforces a single MDM enrollment per device. Intune cannot overwrite an existing MDM profile without first removing it.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
The device is already enrolled in Apple Business Manager or another MDM.
Why this is correct
Apple devices can only be enrolled in one MDM at a time. The device must be removed from the other MDM first.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
License expiration would not produce this specific error.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse MDM enrollment conflicts with other common issues like outdated OS or licensing, but the specific error message directly points to an existing MDM profile, not generic configuration or access problems.
Detailed technical explanation
How to think about this question
iOS uses a built-in MDM framework that allows only one active MDM enrollment at a time, enforced by the device's enrollment profile stored in the user partition. When a device is enrolled via Apple Business Manager (DEP), a supervision identity and MDM payload are installed, preventing a second MDM from enrolling unless the original profile is removed via the Settings app or a remote wipe. In real-world scenarios, this often happens when a device was previously enrolled in a different MDM (e.g., VMware Workspace ONE) and the user did not fully unenroll before attempting Intune enrollment.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this MD-102 question in full detail.
Manage and maintain devices — This question tests Manage and maintain devices — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The device is already enrolled in Apple Business Manager or another MDM. — The error 'This device is already enrolled in another MDM' indicates that the iPhone has an existing MDM profile that conflicts with Intune enrollment. This typically occurs when the device is already enrolled in Apple Business Manager (ABM) or another MDM solution, as iOS enforces a single MDM enrollment per device. Intune cannot overwrite an existing MDM profile without first removing it.
What should I do if I get this MD-102 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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