Global Microsoft outage as Teams and Outlook go down: What happened, what Microsoft said, and more

Microsoft

Microsoft 365 and Teams experienced a significant global outage on November 25, 2024, disrupting services for users worldwide. The outage affected key Microsoft applications such as Outlook, Exchange, and Teams, causing issues with email access, calendar functionality, and video calls.

The outage began around 4 a.m. Eastern Time and quickly escalated, with thousands of users reporting problems on platforms like DownDetector.

Microsoft identified a recent change in their system as the root cause and began reverting the change to fix the issue. “We’ve identified a recent change which we believe has resulted in impact. We've started to revert the change and are investigating what additional actions are required to mitigate the issue,” said Microsoft.

Teams users were unable to create or update Virtual Events, including webinars and Town Halls. Furthermore, users were unable to create chat, add users, and create or edited meetings. Several Outlook users were also unable to send and receive mails.

Yes, more or less the outage has been fixed but some issues still linger for users. “Our fix has reached approximately 98% of the affected environments, and our targeted restarts required for mitigation are being performed as quickly as possible,” said Microsoft.

On its support page, Microsoft said that its monitoring indicates that a large portion of affected users and services are seeing recovery following its mitigation efforts. “We're working on addressing the lingering regions that are still seeing small impact to fully restore service availability, which we still expect to complete by Tuesday, November 26, 2024, at 3:00 AM UTC.”