Microsoft 365 Alert – Service Degradation – Microsoft 365 suite – Some users may be unable to use Microsoft Security Exposure Management (MSEM) in multiple Microsoft 365 services – RESOLVED

Announcements Sourav Nandi

25/02/2025 08:14:00 PM

NHSmail Reference: INC46460133

Microsoft Reference: MO1015679

Issue Status: RESOLVED

Issue Description: Some users may be unable to use Microsoft Security Exposure Management (MSEM) in multiple Microsoft 365 services.

More Info: This issue affects the MSEM feature in the North Europe and West Europe regions within all Microsoft 365 services where the feature has been implemented. This includes, but may not be limited to:

Microsoft Defender for Endpoint
Microsoft Defender for Identity
Microsoft Defender for Cloud Apps

Final Update: 25/02/2025 08:50:00 AM – Microsoft can confirm that the deployment of the fix has completed and that the impact is remediated.

Scope of impact: Any user attempting to use the MSEM feature in multiple Microsoft 365 services may be impacted.

Root Cause: A recent change to the components of Microsoft Defender services responsible for facilitating service notifications introduced an error that’s preventing the MSEM UX from rendering, leading to impact.

Next steps: Microsoft are investigating why the change resulted in impact to help identify these types of problems before implementing potentially impacting changes.