Users may experience issues with various Microsoft 365 services

We've confirmed that the services outlined in the "More info" section of this communication have nearly reached complete recovery. We're monitoring for an extended period to ensure full restoration.

This quick update is designed to give the latest information on this issue.

Title: Users may experience issues with various Microsoft 365 services

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. Telemetry indicates that this service is recovering.

Windows 365: Users may be unable to connect to their Windows 365 Cloud PCs. Telemetry indicates that this service is recovering.

Microsoft Intune: Users and admins may be unable to check-in or enroll devices through Microsoft Intune. Windows Autopilot device enrollment and management actions may also fail. Intune impact has recovered.

Current status: We’ve fully restored power to the affected datacenter, and we're continuing to monitor the recovery of the impacted Microsoft 365 services. According to our telemetry, most affected services have recovered or are in the process of recovering. We’ll communicate service-specific information in the “More info” section above.

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 11:00 PM UTC

Power to the datacenter has been fully restored. We're continuing to see service recovery for Microsoft Teams and SharePoint Online, and we're validating with Microsoft Fabric and Power BI to ensure they're also recovering successfully.

This quick update is designed to give the latest information on this issue.

Title: Users may experience issues with various Microsoft 365 services

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.

Microsoft Intune: Users and admins may be unable to check-in or enroll devices through Microsoft Intune. Windows Autopilot device enrollment and management actions may also fail.

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

Our investigation identified a Microsoft-managed datacenter that is experiencing limited power, which we suspect is leading to impact. We're taking actions to restore the datacenter and in tandem, we're continuing to redirect traffic to alternate infrastructure to mitigate the issue.

This quick update is designed to give the latest information on this issue.

Title: Users may experience issues with various Microsoft 365 services

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 OneDrive for Business content, SharePoint Online Sites, and Microsoft Teams; however, other Microsoft 365 products may be affected as well.

Users may encounter 500/503 errors when accessing the SharePoint sites and OneDrive for Business content.

Current status: We’ve identified that a portion of our database infrastructure has entered an unhealthy state, and we're redirecting traffic to alternate infrastructure to remediate impact. We're monitoring to ensure the service recovers as expected while we investigate the underlying cause of the issue.

Scope of impact: Any user hosted on the affected infrastructure may experience intermittent impact.

Next update by: Thursday, December 26, 2024, at 9:00 PM UTC