Microsoft 365 Copilot and Agent Administration Fundamentals (AB-900)

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Vendor: Microsoft · Last verified: 4 October 2026 · How we rate

Fee $99 (US price)Level BeginnerAccess Open to anyoneDifficulty 2/5

1. The quick verdict

Worth it if you are an IT administrator responsible for rolling out and governing Microsoft 365 Copilot and agents. It is an admin exam with an AI focus: most of it is Microsoft 365 security, data protection and licensing, applied to Copilot.

The one thing to know before you register: it will not teach you to use or build AI; for that, look at AB-730 or AI-901.

2. Our ratings

CriterionScoreWhy
Difficulty (5 = hardest)●●○○○ 2/5Short fundamentals exam, but wide Microsoft 365 admin coverage.
Cost burden, including fee, prep and retake risk (5 = most expensive)●○○○○ 1/5Low fee, short prep, never expires.
Career value today (5 = highest)●●●○○ 3/5Useful for Microsoft 365 admins as Copilot rollouts spread; narrow outside that role.
Skill transfer beyond this vendor (5 = most portable)●●○○○ 2/5Governance ideas transfer; almost everything else is Microsoft 365-specific.
Hands-on experience required (5 = must have built real things)●●○○○ 2/5Familiarity with the Microsoft 365 admin centres is enough.
Ease of access (5 = anyone can register)●●●●● 5/5Open to anyone, in 13 languages.

3. At a glance

FieldDetails
LevelFundamentals
AccessOpen to anyone
Exam feeUS$99 in the United States for Fundamentals exams; varies by country. Confirm at checkout.
Retake policyFee each attempt. Wait 24 hours after the 1st fail, then 14 days. Max 5 attempts in 12 months.
FormatPearson VUE, online proctored or test centre. 45 minutes. May include interactive components. 13 languages.
Passing score700 on a 1,000 scale
Coding neededNone
Formal prerequisitesNone
Realistic prerequisitesWorking familiarity with Microsoft 365 admin centres (Exchange, SharePoint, Teams, Entra, Purview) and core objects such as users, groups and sites.
Validity & renewalDoes not expire.
Estimated prep timeWorking Microsoft 365 admin: 10–15 hours. IT generalist new to Microsoft 365: 25–35 hours.
Official exam guideAB-900 study guide (Microsoft Learn)

Prep-time estimates are our own judgment, not a Microsoft figure.

4. What the exam tests

DomainWeightWhat it means in plain language
Understand data protection and governance tasks for Microsoft 365 and Copilot35–40%Using Purview, sensitivity labels, DLP and retention so Copilot only sees what it should, and spotting oversharing.
Identify the core features and objects of Microsoft 365 services30–35%Licences, admin centres, roles, Entra ID, conditional access and Zero Trust basics.
Perform basic administrative tasks for Copilot and agents25–30%Licensing and billing, turning features on or off, managing prompts and approving and monitoring agents.

The English exam is due to be updated on 2026-10-14, with minor changes.

5. Who should take it, and who shouldn’t

Take it if you are:

  • A Microsoft 365 or modern workplace administrator preparing for a Copilot rollout.
  • An IT support or security person asked to govern agents and AI data access.
  • A consultant who runs Copilot readiness assessments.

Skip it or wait if you are:

  • A business user. AB-730 is about using Copilot, not administering it.
  • A developer. AI-901 or AI-103 fit better.
  • Looking for an AI credential that shows AI skill. This one mainly signals admin and governance skill.

6. What to expect after passing

  • What it signals: You can license, secure and govern Microsoft 365 Copilot and agents.
  • What it doesn’t prove: Ability to build agents, or deep security engineering.
  • Where it’s asked for: Microsoft 365 admin and modern workplace roles, and Microsoft partner firms running Copilot deployments.
  • Natural next step: AB-620 if you move into building agents, or Microsoft’s Microsoft 365 administrator certifications for depth.

7. How to prepare

  • Official: The AB-900 study guide, the free practice assessment, the exam sandbox, and Microsoft Learn modules on Purview and Copilot administration.
  • Practice: Use scenario questions such as “Copilot is surfacing a confidential file; which control fixes it?”. Check they match the October 2026 objectives.

Hands-on:

  1. In a Microsoft 365 developer or trial tenant, apply sensitivity labels and a DLP policy, then test what Copilot can see (Data protection and governance).
  2. Assign Copilot licences and review usage reports (Copilot administration).
  3. Set up a conditional access policy and review audit logs (Core features).

8. Compare with

See all Microsoft guides → · Compare all AI certifications →

9. FAQ

Is AB-900 an AI certification or an admin certification?

Mostly admin. Around two-thirds covers Microsoft 365 services, security and data protection, applied to Copilot and agents.

Do I need to know how to code?

No.

Does AB-900 expire?

No. It is a Fundamentals certification.

What changes in October 2026?

Microsoft is due to update the English exam on 2026-10-14 with minor changes to security features. Check the study guide before you book.

Sources

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