Hello Louis,
Welcome to Microsoft Q&A Platform. Thank you for reaching out & hope you are doing well.
I will try to clarify your doubts regarding this issue and help you out with some solutions.
So, yes, this Interrupted; Success/Failure pattern with the same Request ID is expected when Conditional Access, MFA, or other checks occur. Entra ID does not update the original log, it creates a second entry for audit integrity. Use Request ID to correlate both entries. No investigation is needed unless the second entry is missing or shows repeated failures.
The solution is to treat the two-log sequence as a single, correlated transaction for reporting and audit purposes, using the Request ID as the definitive linking identifier.
- Behavior and Logging Clarification
Is it expected? Yes, this is normal platform behavior for any interactive sign-in protected by MFA, Conditional Access, or other policies requiring user input after the password check.
Logging Method: Entra ID intentionally creates a separate second log entry with the same Request ID. The original Interrupted log entry is not updated. This logging separation allows auditors to see both the required challenge and the final outcome of that challenge.
Time Interval: The time interval is dynamic. It is determined by the user interaction latency (how quickly the user responds to the MFA prompt, etc.) and can range from a few seconds to several minutes.
- Scenarios Causing the Pattern
This pattern is generated in scenarios that require a secondary interactive security check:
Multi-Factor Authentication (MFA): The user successfully enters a password but is then prompted for a second factor (e.g., Authenticator app push).
Conditional Access (CA) Compliance Checks: A CA policy is applied that requires the user to accept Terms of Use, register their device, or complete a device health check before a token is issued.
Session Control Prompts: The system prompts the user with the "Keep me signed in?" (KMSI) option, which requires user interaction.
Password Reset/Change: The sign-in is interrupted to force a mandatory password change due to expiration or a policy requirement.
Do refer below docs foe better understanding:
https://learn.microsoft.com/en-us/entra/identity/monitoring-health/concept-sign-ins
https://learn.microsoft.com/en-us/entra/identity/conditional-access/troubleshoot-conditional-access
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If you need more info, feel free to ask in the comments. Happy to help!
Regards,
Monalisha