This MS-900 practice question tests your understanding of describe microsoft 365 pricing, licensing, and support. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
An organization is reconciling their Microsoft 365 invoice and notices charges for 'Microsoft 365 Copilot' that they did not expect. The administrator suspects that users may have inadvertently enabled Copilot via self-service purchase. How should they prevent this in the future?
Remove Copilot licenses from all users
Why wrong: Does not prevent users from re-purchasing via self-service.
Disable self-service purchasing in the Microsoft 365 admin center
Prevents users from making unauthorized purchases.
Cancel the Copilot subscription
Why wrong: Copilot is an add-on, not a separate subscription.
Set up billing alerts for unexpected charges
Why wrong: Alerts notify after the fact, do not prevent.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Disable self-service purchasing in the Microsoft 365 admin center
Option B is correct because disabling self-service purchasing in the Microsoft 365 admin center is the direct method to prevent users from acquiring Copilot licenses on their own. Self-service purchasing allows users to buy subscriptions like Microsoft 365 Copilot without admin approval, leading to unexpected charges. By disabling this feature, the administrator regains control over license procurement, ensuring no future inadvertent Copilot activations occur.
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.
Remove Copilot licenses from all users
Why it's wrong here
Does not prevent users from re-purchasing via self-service.
Disable self-service purchasing in the Microsoft 365 admin center
Why this is correct
Prevents users from making unauthorized purchases.
Related concept
Read the scenario before looking for a memorised answer.
Cancel the Copilot subscription
Why it's wrong here
Copilot is an add-on, not a separate subscription.
Set up billing alerts for unexpected charges
Why it's wrong here
Alerts notify after the fact, do not prevent.
Common exam traps
The trap here is that candidates may confuse reactive billing controls (like alerts or license removal) with the proactive administrative setting that actually blocks the self-service purchase mechanism, leading them to choose a non-preventive option.
Detailed technical explanation
Self-service purchasing is controlled via the Microsoft 365 admin center under Billing > Purchase services > Self-service purchasing, where administrators can toggle it off for specific products or globally. When disabled, users attempting to acquire Copilot will see an error or be redirected to request admin approval, leveraging Azure AD Conditional Access policies to enforce license assignment control. This feature is part of Microsoft's licensing management framework, which integrates with the Microsoft 365 subscription lifecycle to prevent unauthorized procurement.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
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FAQ
Describe Microsoft 365 pricing, licensing, and support — This question tests Describe Microsoft 365 pricing, licensing, and support — Read the scenario before looking for a memorised answer..
The correct answer is: Disable self-service purchasing in the Microsoft 365 admin center — Option B is correct because disabling self-service purchasing in the Microsoft 365 admin center is the direct method to prevent users from acquiring Copilot licenses on their own. Self-service purchasing allows users to buy subscriptions like Microsoft 365 Copilot without admin approval, leading to unexpected charges. By disabling this feature, the administrator regains control over license procurement, ensuring no future inadvertent Copilot activations occur.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
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