The most likely cause is that the root CA certificate required to validate the RADIUS server certificate is not installed on the device. When troubleshooting Wi-Fi SCEP authentication, the client must trust the issuing certificate authority to complete the EAP-TLS handshake; without the root CA, the device rejects the server certificate even though the Wi-Fi profile and SCEP client certificate are correctly deployed. On the MD-102 exam, this scenario tests your understanding of certificate trust chains in Intune-managed Wi-Fi profiles—a common trap is assuming the SCEP certificate itself is the problem, when the missing root CA specifically breaks server validation. Remember that the device can connect to other networks, isolating the issue to the corporate RADIUS server’s certificate chain. A helpful memory tip: “No root, no route”—without the root CA, the client won’t trust the server, so the authentication handshake fails.
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 a Windows 11 device that cannot connect to the corporate Wi-Fi network. The device is enrolled in Intune and has a Wi-Fi profile assigned. The profile uses SCEP certificate authentication. The user can connect to other Wi-Fi networks. 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 root CA certificate required to validate the RADIUS server certificate is not installed on the device.
The device can connect to other Wi-Fi networks but not the corporate one, indicating the issue is specific to the corporate network's authentication requirements. Since the profile uses SCEP certificate authentication, the device must trust the root CA that issued the RADIUS server certificate to validate the server during the EAP-TLS handshake. If the root CA certificate is missing, the client will reject the RADIUS server certificate, causing the connection to fail. This is the most likely cause because the profile assignment and driver are not specific to this single network failure.
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 user's password has expired.
Why it's wrong here
Authentication uses certificates, not passwords.
✓
The root CA certificate required to validate the RADIUS server certificate is not installed on the device.
Why this is correct
Without the root CA, the device cannot trust the server's certificate, causing authentication failure.
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.
✗
The Wi-Fi profile is not assigned to the user's device.
Why it's wrong here
The stem says the profile is assigned.
✗
The device's Wi-Fi adapter driver is outdated.
Why it's wrong here
Other networks work, so driver is likely fine.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse a missing root CA certificate with a missing client certificate, but the symptom of being able to connect to other networks isolates the problem to server-side certificate validation, not client-side enrollment.
Detailed technical explanation
How to think about this question
In EAP-TLS with SCEP, the client validates the RADIUS server certificate by checking its chain against a trusted root CA store. If the root CA certificate is missing, the client sends a fatal alert during the TLS handshake (e.g., 'certificate_unknown' in the TLS alert protocol), and the connection is terminated. This is distinct from certificate enrollment issues, which would prevent the client certificate from being issued in the first place. In real-world scenarios, this often occurs when the root CA is not distributed via Intune certificate profiles or Group Policy.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
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 root CA certificate required to validate the RADIUS server certificate is not installed on the device. — The device can connect to other Wi-Fi networks but not the corporate one, indicating the issue is specific to the corporate network's authentication requirements. Since the profile uses SCEP certificate authentication, the device must trust the root CA that issued the RADIUS server certificate to validate the server during the EAP-TLS handshake. If the root CA certificate is missing, the client will reject the RADIUS server certificate, causing the connection to fail. This is the most likely cause because the profile assignment and driver are not specific to this single network failure.
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.
About these practice questions
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These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. You are troubleshooting a user's Windows 11 device that cannot connect to the corporate Wi-Fi network. The device is managed by Intune and has a Wi-Fi profile assigned. The profile uses SCEP certificate authentication. The certificate is issued by your internal CA. The device shows 'No internet access' though it connects. What is the most likely issue?
medium
A.The SSID in the profile is incorrect
✓ B.The root CA certificate is not deployed to the device
C.The user does not have an Intune license
D.The Wi-Fi profile is not assigned to the device
Why B: Option C is correct because SCEP certificate-based authentication requires the device to trust the issuing CA. If the root CA certificate is not deployed to the device, the certificate chain cannot be validated, causing authentication failure. Option A (Profile is not assigned) would prevent connection entirely. Option B (Wrong SSID) would not connect to the wrong network. Option D (User not licensed) would not affect certificate authentication after enrollment.
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Question Discussion
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