You prepare by confirming the application owner, the scope of users in review, and the business rule for keeping or removing access. Make sure current assignments are accurate, reviewers understand the context, and there is a clear decision deadline. Remove obvious stale access first, then use the review outcome to update memberships, app assignments and exceptions.
What an Entra access review is really checking
A Microsoft Entra access review is not just a periodic admin task. It is a control check on whether the right people still need access to a specific application, based on business need rather than historical assignment. That means the review works best when the app owner can judge actual use, role context, and exceptions, not just confirm that an account exists.
The preparation step should start by defining the review boundary clearly. Confirm which application, groups, or app roles are in scope, and make sure the reviewer understands whether they are deciding on direct assignments, group-based access, or both. If the scope is fuzzy, reviewers tend to approve too much access or challenge records they were never meant to assess.
Preparation also means cleaning up the review input before it starts. Remove obviously stale access, resolve known duplicates, and fix inaccurate ownership or assignment data so the review is not forced to compensate for bad records. In practice, the quality of the review outcome depends on the quality of the entitlement inventory that feeds it.
For broader access governance patterns, the mechanics are similar to the ones described in Access Reviews and Certification Guide, where the focus is on narrowing scope, adding context, and closing the remediation loop.
How to set up the review so decisions are defensible
The most useful preparation is to make each decision easy to justify. That usually means confirming the application owner, the business rule for retention, and the reviewer’s authority to approve or remove access. If the reviewer does not know why access exists, the process becomes a rubber stamp or a guess.
Give reviewers enough context to act on the entitlement itself. For example, they need to know whether the access is for a job function, a temporary project, a support exception, or a delegated admin path. A clean decision record should show who reviewed the access, what they decided, and when the decision must be completed.
Set a clear deadline before the review opens, not after. Deadlines reduce drift, but they only work if there is an agreed follow-up path for non-response, escalation, and automatic removal when the business rule requires it. Without that, the review becomes advisory rather than a control.
This is also where identity governance discipline matters most. The same preparation logic used for lifecycle and recertification in IAM and IGA Basics applies here: the review should validate entitlement purpose, ownership, and least privilege, not simply confirm that an entry is present.
What to do before and after the review window
Before the review opens, remove obvious stale access and settle simple exceptions. That reduces reviewer fatigue and keeps attention on the permissions that actually require judgment. It also helps distinguish a genuine business exception from access that has survived only because nobody has challenged it.
During the review, keep the instructions operational rather than abstract. Reviewers should know whether they are validating current employment, project membership, support responsibility, or application need. If the application contains privileged or high-risk permissions, treat those as separate decisions rather than burying them inside a larger list.
After the review closes, the real work is remediation. Approved removals must be translated into changes to memberships, app assignments, and documented exceptions. If the outcome is not implemented promptly, the review only creates evidence, not reduced exposure.
For teams that want a repeatable operating model, the Access Review Checklist is a useful companion because it reinforces preparation, evidence, and follow-up rather than treating the review as a one-time event.
Risk and Threat Considerations
Access reviews fail when they inherit bad data, unclear ownership, or too many low-value decisions. The main risk is not the review itself, but the false confidence created when stale access is repeatedly approved or never actioned.
Failure mechanism: Inaccurate assignments, weak scoping, and reviewer fatigue can turn the review into a formality, allowing unneeded access to persist and increasing the chance of unauthorized use or privilege creep.
Impact: Unnecessary access remains available to users who no longer need it, which expands the blast radius of compromise and weakens auditability, accountability, and least-privilege enforcement.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
CSA Cloud Controls Matrix and NIST SP 800-53 Rev 5 set the technical controls, while ISO/IEC 27001:2022 defines the regulatory obligations.
| Framework | Control / Reference | Relevance |
|---|---|---|
| CSA Cloud Controls Matrix | IAM — Identity and Access Management | Access reviews directly govern user entitlement lifecycle and review decisions. |
| Recommendation — Review and recertify application entitlements through IAM controls with defined owners and evidence. | ||
| NIST SP 800-53 Rev 5 | AC-2 — Account Management | User access reviews validate whether accounts and assignments remain necessary. |
| AC-6 — Least Privilege | The review is meant to remove excess access and enforce need-to-know. | |
| AU-6 — Audit Record Review, Analysis, and Reporting | Reviews produce evidence that should be tracked, analyzed, and actioned. | |
| Recommendation — Recertify accounts and remove unnecessary access promptly. Remove access that is not justified by current job duties or business need. Retain review evidence and use it to verify remediation completion. | ||
| ISO/IEC 27001:2022 | A.5.18 — Access rights | Access rights must be provisioned, reviewed, and adjusted on a defined basis. |
| Recommendation — Review access rights regularly and revoke those no longer needed. | ||
Practitioner Guidance
What to verify: Verify that the reviewer is the real business owner or a delegated authority with enough context to decide, and that the access list reflects the current entitlement model rather than a stale export. If the list is noisy, fix the source data first.
Decision rule: If access cannot be tied to a current business need, treat non-response or vague justification as a removal case, not as an approval case. If the application supports sensitive or privileged functions, separate those decisions so they do not get lost inside a bulk review.
Practitioner takeaway: The quality of an Entra access review is determined before the review begins, because clear scope, clean assignments, and enforceable follow-up matter more than the review interface itself.
Related resources from NHI Mgmt Group
- How do you restrict a Microsoft Entra application to a specific set of users?
- How do you access and review activity logs in Microsoft Entra ID?
- When should organizations review access controls?
- How do organisations simplify password resets for users who authenticate to privileged access systems with Microsoft Entra?