Microsoft 365 Alert – Service Degradation – Microsoft 365 apps – Multi-Factor Authentication (MFA) may prevent users from accessing some Microsoft 365 (M365) Apps – RESOLVED

13/01/2025 09:50:00 AM

NHSmail Reference: INC48007756

Microsoft Reference: OP978247

Issue Status: RESOLVED

Issue Description: Multi-Factor Authentication (MFA) may prevent users from accessing some Microsoft 365 (M365) Apps.

Final Update: 28/01/2025 11:15:00 AM Microsoft have identified that a section of infrastructure responsible for MFA operations unexpectedly became unresponsive. They’ve completed an extended period of monitoring in which the service health has remained stable and are declaring this incident as resolved.

Scope of impact: Impact is specific to users who are authenticating to our M365 Apps using MFA.

Next steps: Microsoft are analyzing performance data and trends on the affected infrastructure to help prevent this problem from happening again.

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