Microsoft Entra Access Reviews are periodic checks that ask owners, managers, or users to confirm whether access is still needed. They help remove unnecessary privileges, but only if reviewers are informed and exceptions are tracked, so defenders should prioritise sensitive groups, enforce completion, and act on denials quickly.
What Access Reviews Actually Do
Access reviews are governance checks, not just admin chores. They ask an owner, manager, or user to confirm whether access remains justified, so the value comes from making an explicit keep-or-remove decision rather than assuming old access is still acceptable.
Because the review is a decision point, it works best when the scope is narrow enough to be reviewed seriously. Access Reviews and Certification Guide explains why high-value campaigns focus on the access that creates the most risk, not just the largest population.
Why Access Reviews Fail in Practice
The most common failure mode is rubber stamping. If reviewers do not understand what they are approving, or if the request bundle is too large and repetitive, the process turns into a box-ticking exercise that preserves stale entitlements instead of removing them.
Access reviews also fail when exceptions are not tracked to closure. A denial that does not trigger revocation, follow-up, and evidence of completion leaves the underlying exposure untouched, which is why closed-loop remediation matters as much as the review itself. Access Review Checklist is useful here because it ties scoping, reviewer preparation, and revocation follow-up into one operational flow.
Where Access Reviews Fit in Identity Governance
Access reviews sit inside identity governance and administration, alongside provisioning, role design, entitlement management, and deprovisioning. They are one of the main tools for finding access creep after role changes, project changes, or staff movement has already happened.
That is why they are especially valuable for privileged access, sensitive groups, and machine or service access that tends to accumulate quietly over time. IAM and IGA Basics is a good companion reference for understanding how access reviews relate to broader governance, while Privileged Access Management Guide shows why privileged access review has to be treated as a distinct control pattern.
How to Use Microsoft Entra Access Reviews Well
The strongest programs focus on reviewers who have real context, limit review volume, and make denial handling fast and visible. If the reviewer cannot tell whether access is still needed, the control is too weak to be trusted.
In Microsoft Entra, the practical goal is to build a repeatable cycle: review the most sensitive access first, enforce completion, and ensure denials result in timely removal. When organisations need a broader operating model for campaigns, remediation, and evidence, Access Reviews and Certification Guide and IGA Buyer's Guide both help connect the feature to the governance process behind it.
Risk and Threat Considerations
Access reviews reduce entitlement sprawl, but only when they are timely, accurate, and acted on. If reviews are infrequent or poorly scoped, unnecessary privileges can persist long after they should have been removed, which increases the blast radius of a compromise and makes misuse harder to detect.
Failure mechanism: stale or overbroad access survives review because approvals are rushed, exceptions are unmanaged, or denials are not remediated. That leaves accounts, groups, and delegated permissions in place even though the business need has ended.
Impact: attackers who obtain a valid account, or insiders with too much access, can retain paths to sensitive systems, data, and administrative functions longer than intended. The practical consequence is stronger persistence, greater lateral movement potential, and higher audit exposure.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
NIST SP 800-53 Rev 5 and CIS Controls v8 set the technical controls, while ISO/IEC 27001:2022 defines the regulatory obligations.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST SP 800-53 Rev 5 | AC-2 — Account Management | Access reviews support ongoing account and entitlement management by revalidating need-to-know. |
| AC-6 — Least Privilege | Reviews enforce least privilege by identifying unnecessary permissions that should be revoked. | |
| AU-6 — Audit Review, Analysis, and Reporting | Completed reviews and denials create audit evidence for governance and remediation follow-through. | |
| Recommendation — Review accounts and entitlements regularly and remove access that is no longer justified. Use review results to strip excess privileges and keep access to the minimum required. Capture review outcomes, investigate denials, and retain evidence that removals were completed. | ||
| ISO/IEC 27001:2022 | A.5.18 — Access rights | Access reviews directly support periodic review and adjustment of access rights. |
| Recommendation — Periodically recertify access rights and remove privileges that are no longer needed. | ||
| CIS Controls v8 | 5 — Account Management | Access reviews are a core account-management safeguard for limiting unnecessary access. |
| Recommendation — Continuously review accounts and privileges and revoke access that no longer has a business need. | ||
Practitioner Guidance
Governance implication: treat access reviews as a closure process, not a reporting exercise. The control should have clear ownership, a defined review population, and a tracked remediation path for every denial or non-response.
What to watch for: reviewer fatigue, broad certification lists, repeated approvals without evidence of context, and lingering exceptions are all signs that the program is producing compliance theater rather than access reduction.
Practitioner takeaway: the quality of an access review is measured by removed access, not by completed forms.
Related resources from NHI Mgmt Group
- How should security teams evaluate Microsoft Entra alternatives for access governance?
- How should security teams use DSPM alongside Microsoft 365 access reviews?
- Why do Microsoft 365 environments need access reviews as well as technical controls?
- Who should own access reviews for agent identities in Entra ID?
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Reviewed and updated by the NHIMG editorial team on October 20, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org