Users may be unable to access Microsoft 365 services

Title: Users may be unable to access Microsoft 365 services

User impact: Users may be unable to access Microsoft 365 services, including Teams and Outlook.

Current status: Our investigation so far indicates impact is associated with a possible third-party networking issue. We're recursively investigating the health of the Microsoft-managed service environment to identify whether any mitigation actions are required and ensure our services are healthy.

Scope of impact: Your organization is affected by this event, and any of your users hosted in North America may be impacted.

Next update by: Wednesday, January 21, 2026, at 7:00 PM UTC

As the primary reports of impact are originating from users hosted in North America, we're reviewing networking health across the region to help us determine whether there are any connectivity issues affecting the Microsoft-managed service environment.

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

Title: We're investigating a potential issue affecting Microsoft 365 services

User impact: We've received reports of an issue affecting Microsoft 365 services, including Teams and Outlook.

Current status: We're reviewing telemetry across dependent portions of service infrastructure to help us isolate the nature of the impact, the source of the issue, and determine what recovery actions may be required.

Scope of impact: The scope of this issue is currently being investigated.

Next update by: Wednesday, January 21, 2026, at 6:00 PM UTC

Title: We're investigating a potential issue affecting Microsoft 365 services

User impact: We've received reports of an issue affecting Microsoft 365 services, including Teams and Outlook.

Current status: We're investigating a potential issue with Microsoft 365 services and checking for impact to your organization. We'll provide an update within 30 minutes.