MO1160527: Microsoft 365 suite Service Health Incident (Service Restored)

[365 Service Alert]

Users may have experienced issues with multiple Microsoft 365 services.                                                                                                                                                                                                                                     

Users may have experienced issues with multiple Microsoft 365 services ID: MO1160527 Issue type: Incident Status Service Restored Impacted services Microsoft 365 suite Details Title: Users may have experienced issues with multiple Microsoft 365 services User impact: Users may have experienced issues with multiple Microsoft 365 services. More info: The impact to services and functionality included, but may not have been limited to: Microsoft Power BI and Microsoft Fabric - Degraded performance and service unavailability Windows 365 - Some users may have been unable to connect to their Windows 365 Cloud PCs Microsoft Teams - Notifications pertaining to existing change notification subscriptions, specifically for new messages, message updates and changes in membership, weren't delivering as expected. Microsoft Defender for Identity - Users may have seen their update data take time to process, which could have resulted in incomplete information appearing on the identity inventory page. Final status: We've completed our period of monitoring service health and can confirm that the issue is resolved. Scope of impact: This issue may have impacted any user in the Switzerland region attempting to utilize the impacted services and functionality in the More Info section of this communication. Start time: Saturday, September 27, 2025, at 1:03 AM UTC End time: Saturday, September 27, 2025, at 11:05 AM UTC Root cause: A section of infrastructure that supports connectivity for multiple Microsoft 365 services was performing below the expected service threshold. Next steps: - We're analyzing performance data and trends on the affected infrastructure to help prevent this problem from happening again. This is the final update for the event. Is this message helpful? Did you find this email helpful? Yes No To customize what’s included in this email, who gets it, or to unsubscribe, set your Service health preferences. If you are receiving this email because your Admin added you as a recipient, please contact your Admin to unsubscribe. Privacy Statement Microsoft Corporation, One Microsoft Way, ​Redmond, WA 98052​