Microsoft 365 Outage Updates: Outlook, Teams And Copilot Recover After Nearly 24 Hours Of Global Disruption

Microsoft is restoring services after a major global outage disrupted its Microsoft 365 ecosystem for nearly 24 hours, leaving users struggling to access emails, schedule meetings and use workplace collaboration tools. The disruption, which began on Thursday, November 12, affected businesses, schools, government agencies and other organisations across multiple countries.

Microsoft 365 Outage Updates: Outlook, Teams And Copilot Recovers After Global Disruption

The company reported improving service availability on Friday, November 13, as software fixes helped stabilise affected systems. However, recovery was gradual, with some users continuing to experience intermittent access problems and delays in email delivery. The incident affected Outlook, Microsoft Teams, Copilot and other services connected to Microsoft's cloud infrastructure.

Microsoft 365 Outage: What Happened And Which Services Were Affected?

The disruption began at around 1 pm Eastern Time on Thursday, November 12, when users started reporting problems accessing Outlook and other Microsoft services. The outage spread across regions, with Downdetector receiving reports from 74 countries and territories within roughly an hour.

Outlook was among the most visibly affected services, with users reporting difficulties opening mailboxes, sending and receiving emails, and accessing their messages. Microsoft Teams also experienced problems with certain functions, particularly those dependent on Exchange Online, Microsoft's email and calendar platform.

Copilot, Microsoft's artificial intelligence assistant, was affected as well. Some Microsoft 365 applications and connected services experienced disruptions, while integrations that allow third-party AI tools to access workplace information were also impacted. Reuters reported that connectors used by OpenAI and Anthropic were among those affected.

The impact extended beyond individual users. Organisations rely on Microsoft 365 for internal communication, document access, meetings, scheduling and daily business operations. When these services become unavailable, routine activities such as processing approvals, coordinating teams and responding to customers can be delayed.

Microsoft Apologises After Global Outage; Rules Out Cyberattack And AI Agents

Microsoft apologised to customers and partners after a global outage disrupted several of its services, including Outlook, Microsoft Teams and Copilot. The company said it was witnessing "broad recovery and stability" across its services as efforts to restore normal operations continued.

In a statement posted on X (formerly Twitter), Microsoft attributed the disruption to a technical issue linked to an earlier network capacity upgrade that surfaced following a recent network change. The company clarified that the incident was not caused by a cyberattack or artificial intelligence (AI) agents.

"We are deeply sorry for the disruption this incident has caused our customers and partners. We know the trust they place in our services and take that responsibility extremely seriously," Microsoft said in its statement. It added that services were showing broad recovery and stability, while reiterating that the outage stemmed from a technical problem associated with its network infrastructure.

What Caused Microsoft 365 Outage?

Microsoft attributed the disruption to server and infrastructure problems that affected users' ability to connect to its services. Its initial updates described elevated load across parts of the infrastructure, which contributed to connectivity errors.

The company also said a network capacity-related change was associated with the incident. The resulting server problems left some infrastructure unexpectedly unavailable, while attempts to restore service initially produced mixed results.

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