Degraded performance with multiple Microsoft 365 services and features ID: MO427469

Status

Service Restored

Affected Services

Microsoft 365 suite Microsoft 365 Defender, Microsoft 365 suite, Microsoft Intune, Microsoft Teams, Yammer Enterprise

Details

Title: Some users may experience degraded performance with multiple Microsoft 365 services and features

User Impact: Users may experience degraded performance with multiple Microsoft 365 services and features.

More info: Services and features impacted include, but are not limited to:

– Delays for calling and message notifications within Microsoft Teams

– Yammer feeds not loading

– Unable to access the Microsoft Defender for Identity Portal (MDI) or loading MDI pages within the Security and Compliance Center (SCC). Additionally, some MDI-related alerts may not be delivered.

– Unable to check-in devices within Microsoft Intune

Current status: We’ve identified a section of Azure Cosmos DB infrastructure within Europe is not performing as expected. We’re attempting to reroute connections to alternate components to remediate the impact.

Scope of impact: Impact is specific to requests which are routed through impacted components within Europe.

Start time: Wednesday, September 7, 2022, at 9:50 AM UTC

End Time: Wednesday, September 7, 2022, at 5:21 PM UTC

Final status: Normal service operation has been restored for the affected Azure Cosmos DB and subsequently Microsoft 365 services. We’ve determined that the confluence of several internal service operations caused an unexpected increase in traffic for the affected Azure Cosmos DB. The affected DB was recovered as of Wednesday, September 7, 2022, at 5:21 PM UTC. While the issue was ongoing, we performed failover actions for core services which alleviated the load on the impacted Cosmos DB, and also performed load balancing to further stabilize the environment. We’re closely monitoring service availability and will investigate the factors that led to the unexpected high utilization.