The answer is that the user is not in the Active Directory group that ISE is configured to query. When ISE returns the error "user not found in identity store" during 802.1X with PEAP-MSCHAPv2, it means the authentication request reached the identity store but the user’s credentials were not matched against the specific group or container defined in the identity source sequence. This is a common misconfiguration where ISE is set to authenticate only members of a particular AD group, and users outside that group are rejected even though they exist in Active Directory. On the Cisco SCOR 350-701 exam, this scenario tests your understanding of how ISE integrates with external identity stores and the importance of group membership filtering. A frequent trap is confusing this error with a shared secret mismatch or certificate failure, but those produce different log messages. Memory tip: "Group gate" — if the user exists in AD but fails, check the group membership gate first.
350-701 Practice Question: Secure Network Access, Visibility and Enforcement
This 350-701 practice question tests your understanding of secure network access, visibility and enforcement. 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.
A network engineer configures ISE for 802.1X with PEAP-MSCHAPv2. Users report intermittent authentication failures on certain switches. The engineer checks ISE logs and sees 'Authentication failed' with reason 'User not found in identity store'. What is the most likely issue?
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 user is not in the Active Directory group that ISE is configured to query.
Option C is correct. The error 'User not found in identity store' indicates that the user's credentials are not present in the configured identity source, such as Active Directory. Option A is incorrect because a shared secret mismatch would result in different errors. Option B is incorrect because certificate expiration would cause a certificate-related error. Option D is incorrect because periodic reauthentication does not cause this error.
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 switch port is configured with 'authentication periodic'.
Why it's wrong here
Periodic reauthentication does not cause authentication failures; it triggers reauthentication after a timer.
✓
The user is not in the Active Directory group that ISE is configured to query.
Why this is correct
ISE cannot find the user in the identity store, likely due to group membership or search base issues.
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 switch is not configured with the correct shared secret.
Why it's wrong here
A shared secret mismatch would cause a different error in ISE logs.
✗
The user's certificate is expired.
Why it's wrong here
Certificate errors appear separate from identity store issues.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 practitioner preparing for the 350-701 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which 350-701 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Secure Network Access, Visibility and Enforcement — This question tests Secure Network Access, Visibility and Enforcement — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The user is not in the Active Directory group that ISE is configured to query. — Option C is correct. The error 'User not found in identity store' indicates that the user's credentials are not present in the configured identity source, such as Active Directory. Option A is incorrect because a shared secret mismatch would result in different errors. Option B is incorrect because certificate expiration would cause a certificate-related error. Option D is incorrect because periodic reauthentication does not cause this error.
What should I do if I get this 350-701 question wrong?
Identify which 350-701 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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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