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How to Configure Microsoft Entra Conditional Access for Risky Travel Sign-Ins

By Freedom251 Team · · 4 min read

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To respond to risky travel sign-ins, create a Microsoft Entra Conditional Access policy that uses the Sign-in risk condition and requires multifactor authentication (MFA) for the risk levels your organization chooses. Entra ID Protection’s atypical-travel detection is a risk signal—not a guarantee that every trip will be flagged or proof that an account is compromised. Start the policy in report-only mode, validate its effect, and enforce it only after review.

What Entra means by risky travel

Microsoft Entra ID Protection can identify sign-in risk using detections such as atypical travel and unfamiliar sign-in properties. They are distinct signals that may contribute to a sign-in risk assessment; neither is a promise that Entra will detect every trip. Microsoft describes atypical travel as difficult to simulate and says its algorithm attempts to filter false positives, including travel from familiar devices and sign-ins through VPNs used by other people in the directory. A location anomaly should therefore be treated as a reason to apply an appropriate control, not as proof of compromise. Microsoft’s risk-detection documentation explains these signals.

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Microsoft defines sign-in risk as “the likelihood that an authentication request isn’t from the identity owner.” In a risk-based Conditional Access policy, that assessment can be used to require MFA or apply another configured access decision.

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Prerequisites and policy design

The documented risk-based Conditional Access capability requires Microsoft Entra ID P2. Microsoft also identifies Entra Suite as providing full access to ID Protection features, so verify the tenant’s current entitlement before rollout. Microsoft’s sign-in risk-based MFA guidance covers the licensing and user experience considerations.

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Decide which users and resources should be covered, which risk levels warrant action, and what MFA method or authentication strength is suitable. Microsoft’s example uses medium and high sign-in risk, but that is a starting point to assess—not a universal threshold. Exclude emergency access (break-glass) accounts from the policy so that a policy error or authentication problem is less likely to lock administrators out. Ensure affected users can complete the required MFA method; Microsoft warns that users who are not registered for MFA can be blocked during risky sessions.

Configure the sign-in risk policy

  1. Open Conditional Access. In the Microsoft Entra admin center, go to Entra ID > Conditional Access and create a new policy. Give it a name that identifies its purpose and audience. See Microsoft’s policy example.
  2. Set the assignments. Select the intended users and resources. Microsoft’s example targets all users and all resources; validate that scope against your organization’s access model. Exclude emergency access accounts.
  3. Choose the risk condition. Under Conditions > Sign-in risk, enable the condition and select the risk levels to address. Medium and high are Microsoft’s example, not a prescribed setting for every tenant.
  4. Choose the access control. Under Access controls > Grant, require MFA, using an authentication strength appropriate to your organization. Confirm that affected users are registered and able to satisfy it.
  5. Evaluate before enforcing. Set the policy to Report-only. Review its policy impact and sign-in results, investigate unexpected matches or exclusions, and adjust the scope or controls before switching the policy on. Microsoft explains the report-only mode and its evaluation results.

Keep sign-in risk and user risk in separate Conditional Access policies. Microsoft’s risk-policy guidance advises against combining those two conditions in one policy.

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Where named locations fit

A named location represents configured countries or regions, or IP ranges, and can be selected as a network condition in Conditional Access. It can provide context for known networks or support a separate policy that blocks or otherwise controls access from a selected location. Microsoft notes that trusted or known locations can improve ID Protection risk-calculation accuracy. A named location does not independently determine whether someone’s journey between locations was physically possible. See Microsoft’s named-location and network-condition guidance.

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If you need a location-based block, configure the named location, target the appropriate users and resources, select the location under the network condition, and choose the relevant grant control. Evaluate that policy in report-only mode and protect emergency access accounts before enforcing it.

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How the related controls differ

Control Signal Policy mechanism and response Prerequisite
Entra ID Protection sign-in risk Risk detections can include atypical travel and unfamiliar sign-in properties. A Conditional Access sign-in risk condition can require MFA or apply another configured access decision. Microsoft Entra ID P2 for the documented risk-based Conditional Access capability.
Named-location condition Configured country/region or IP-range context. A Conditional Access network condition can control access from selected locations, including blocking it where configured. A named location must be configured; it is not itself a travel-anomaly detector.
Defender for Cloud Apps impossible-travel detection Activity from two locations in less time than travel would permit. An anomaly detection for activity in connected apps; it is separate from Entra ID Protection sign-in risk. At least one connected app using app connectors.

Microsoft documents the separate Defender for Cloud Apps impossible-travel anomaly. Do not treat that alert as the Entra sign-in risk condition used in the policy above.

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Review before turning the policy on

  • Confirm the tenant has the required entitlement and that the policy targets the intended users and resources.
  • Check that emergency access accounts are excluded and that affected users can complete the required MFA method.
  • Review report-only results for unexpected impact before enforcing the policy.
  • Keep sign-in risk and user risk in separate policies, and use named locations only for location or network context.

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Conditional Accessidentity securityMicrosoft Entramultifactor authenticationSign-in risk

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