Quick Answer
The answer is that the devices lack a compatible Trusted Platform Module (TPM) chip, which is the most likely cause for BitLocker encryption not starting. BitLocker’s automatic encryption feature, when enabled via Intune, depends on a TPM to securely store encryption keys and perform system integrity validation at boot; without this hardware component, the encryption process cannot initiate, leaving the devices non-compliant with the policy. On the Microsoft 365 Endpoint Administrator MD-102 exam, this scenario tests your understanding of BitLocker prerequisites and Intune policy enforcement—a common trap is assuming software-based encryption or a startup key can substitute for the TPM requirement, but automatic encryption specifically mandates TPM presence. Remember the mnemonic: “No TPM, no auto-encryption—keys need a hardware home.”
This MD-102 practice question tests your understanding of manage, maintain, and protect 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.
A company manages 500 Windows 11 devices with Microsoft Intune. They use BitLocker encryption with automatic encryption enabled. Several devices report that encryption did not start. The administrator reviews the devices and finds that they are not compliant with the BitLocker policy. 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.
Devices do not have a secure boot enabled
Why wrong: Secure boot is recommended but not required for encryption.
Devices do not have a Trusted Platform Module (TPM) chip
BitLocker requires a TPM to automatically encrypt devices.
Devices are not Azure AD joined
Why wrong: Azure AD join is not required for BitLocker encryption.
BitLocker startup key is not saved to Azure AD
Why wrong: This is a post-encryption step for recovery.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Devices do not have a Trusted Platform Module (TPM) chip
BitLocker automatic encryption requires a compatible TPM chip to securely store encryption keys and validate system integrity. Without a TPM, BitLocker cannot start the encryption process automatically, leading to non-compliance with the policy. The other options do not directly prevent encryption from starting.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Devices do not have a secure boot enabled
Why it's wrong here
Secure boot is recommended but not required for encryption.
Devices do not have a Trusted Platform Module (TPM) chip
Why this is correct
BitLocker requires a TPM to automatically encrypt devices.
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.
Devices are not Azure AD joined
Why it's wrong here
Azure AD join is not required for BitLocker encryption.
BitLocker startup key is not saved to Azure AD
Why it's wrong here
This is a post-encryption step for recovery.
Common exam traps
The trap here is that candidates often confuse Secure Boot with TPM requirements, assuming Secure Boot is mandatory for BitLocker, when in fact the TPM is the critical hardware component for automatic encryption to initiate.
Detailed technical explanation
BitLocker leverages the TPM to measure boot components (via PCRs) and seal the encryption key, ensuring the system hasn't been tampered with. If no TPM is present, BitLocker can still be used with a startup password or USB key, but automatic encryption (as configured in Intune) will fail because it expects TPM-based key protection. In a real-world scenario, devices without TPM 2.0 (common in older hardware) will consistently report non-compliance for BitLocker policies that mandate automatic encryption.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Manage, maintain, and protect devices — This question tests Manage, maintain, and protect devices — Read the scenario before looking for a memorised answer..
The correct answer is: Devices do not have a Trusted Platform Module (TPM) chip — BitLocker automatic encryption requires a compatible TPM chip to securely store encryption keys and validate system integrity. Without a TPM, BitLocker cannot start the encryption process automatically, leading to non-compliance with the policy. The other options do not directly prevent encryption from starting.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
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