User impact: Users may experience intermittent delays or navigation errors when accessing Microsoft 365 services.

More info: Our telemetry indicates that impact is primarily to users hosted in North America and primarily affects OneDrive for Business content, SharePoint Online Sites, and Microsoft Teams functionality; however, other Microsoft 365 products may be affected as well.

SharePoint Online and OneDrive for Business: Users may encounter 500/503 errors when accessing the SharePoint sites and OneDrive for Business content. Current telemetry is showing recovery for these services.

Microsoft Teams: Our telemetry indicates that Microsoft Teams is recovering. Users leveraging both the web and desktop experiences may encounter failures sending messages, creating chats and channels, or receiving notifications for messages and calls.

Microsoft Fabric: Users may experience intermittent failures or delays when performing any actions related to Microsoft Fabric or Power BI workloads.

Microsoft Power BI: Users may experience intermittent failures or delays when performing any actions related to Microsoft Power BI workloads.

Current status: We’re continuing to restore power to the affected datacenter incrementally. We’ve confirmed impact to some Microsoft 365 services, specifically Microsoft Teams and SharePoint Online, has been remediated. We’re continuing to monitor our other affected services to ensure all recover as expected. We’re continuing to assess the impact to other affected Microsoft 365 service and we’ll communicate service-specific information in the “More info” section above.

Scope of impact: The power event causing impact is occurring in the south-central United States. This is causing intermittent impact primarily to users hosted in North America, though multi-regional organizations with users outside North America may encounter issues as well. As our traffic redirection and power restoration effort continues, we expect impact to become more isolated to users and services hosted specifically in our south-central United States-based infrastructure.

Start time: Thursday, December 26, 2024, at 6:44 PM UTC

Preliminary root cause: A power event within a Microsoft-managed datacenter has caused impact to downstream Microsoft 365 services.

Next update by: Thursday, December 26, 2024, at 10:00 PM UTC