Affected users may be unable to access Microsoft 365 services and features

Affected users may be unable to access Microsoft 365 services and features

Issue ID: MO1169016

Affected users may be unable to access Microsoft 365 services and features

Issue ID: MO1169016
Affected services: Microsoft 365 suite
Status: Service restored
Issue type: Incident
Start time: Oct 9, 2025, 2:10 PM EDT
End time: Oct 9, 2025, 2:50 PM EDT

User impact
Affected users may have been unable to access Microsoft 365 services and features.

More info
Users attempting to access or use features within Microsoft Teams, Exchange Online, Microsoft 365 admin center, and Windows 365 may have been impacted.

Scope of impact
Any users in North America attempting to access the services listed in the More info of this communication may have been impacted.

Preliminary root cause
A portion of network infrastructure in North America was misconfigured, which caused traffic across the region to become unhealthy.

Next steps
- We're analyzing configuration policies and traffic management processes on the affected network infrastructure to identify necessary refinements and increase resilience in the event of future incidents.

We'll provide a preliminary Post-Incident Report within two business days and a final Post-Incident Report within five business days.


Current status
Oct 9, 2025, 3:52 PM EDT
We’ve identified that a portion of network infrastructure in North America was misconfigured, which caused traffic across the region to become unhealthy. We’ve taken mitigating action to rebalance traffic in the affected infrastructure, and we’ve observed service health improve to normal levels across all impacted services.
  • Updates
    • Oct 9, 2025, 3:08 PM EDT
      Quick: While we’re observing service health recovering, we’ve received additional reports of issues accessing the Microsoft 365 admin center related to this issue. We expect these issues to resolve as service health improves. This quick update is designed to give the latest information on this issue.
    • Oct 9, 2025, 3:01 PM EDT
      We've taken mitigating action to rebalance traffic to healthy infrastructure and are seeing improvements in service health. We'll continue to closely monitor the service environment. This quick update is designed to give the latest information on this issue.
    • Oct 9, 2025, 2:54 PM EDT
    • Oct 9, 2025, 2:33 PM EDT
    Oct 9, 2025, 3:08 PM EDT
    Quick: While we’re observing service health recovering, we’ve received additional reports of issues accessing the Microsoft 365 admin center related to this issue. We expect these issues to resolve as service health improves. This quick update is designed to give the latest information on this issue.
  • Oct 9, 2025, 3:01 PM EDT
    We've taken mitigating action to rebalance traffic to healthy infrastructure and are seeing improvements in service health. We'll continue to closely monitor the service environment. This quick update is designed to give the latest information on this issue.
  • Oct 9, 2025, 2:54 PM EDT
  • Oct 9, 2025, 2:33 PM EDT