Users may be experiencing issues with multiple Microsoft 365 services
ID: MO1160527
Issue type: Incident
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Status
Service Degradation
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Impacted services
Microsoft 365 suite, Power BI, Microsoft Teams, Microsoft Defender XDR, Windows 365
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Details
Title: Users may be experiencing issues with multiple Microsoft 365 services
User impact: Users may experience issues with multiple Microsoft 365 services.
More info: The impact to services and functionality includes, but may not be limited to:
Microsoft Power BI and Microsoft Fabric - Degraded performance and service unavailability
Windows 365 - Some users are 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, aren't delivering as expected
Microsoft Defender for Identity - users may see their update data take time to process, which could result in incomplete information appearing on the identity inventory page.
Current status: A portion of infrastructure that supports connectivity for multiple Microsoft 365 services is performing below the expected service threshold. We're attempting to reroute connections to alternate infrastructure to remediate the impact. We anticipate having an update on our mitigation efforts by the next scheduled update time.
Scope of impact: This issue may impact any user in the Switzerland region attempting to utilize the impacted services and functionality in the More Info section.
Start time: Saturday, September 27, 2025, at 1:03 AM UTC
Root cause: A portion of infrastructure that supports connectivity for multiple Microsoft 365 services is performing below the expected service threshold.
Next update by: Saturday, September 27, 2025, at 7:00 AM UTC
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