REDMOND, Wash. — Microsoft is working urgently to resolve a major global service disruption affecting Outlook, Microsoft Teams, Microsoft 365, and Microsoft Copilot.
The outage began on Thursday, November 12, 2026, and persisted into Friday morning, preventing businesses, government agencies, and individual users worldwide from sending emails, joining meetings, or accessing cloud productivity tools.
Key Details of the Microsoft 365 Outage
Microsoft Global Service Disruption Overview (November 12–13, 2026)
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| AFFECTED SERVICES: Outlook, Teams, Microsoft 365, Copilot, OneDrive |
| INCIDENT TRACKING: Tracked under Microsoft 365 IDs EX1550543 & MO1550821 |
| ROOT CAUSE STATUS: No cyberattack indicated; reviewing config updates |
| CURRENT PROGRESS: Traffic rerouted; gradual server recovery underway |
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- Widespread Service Impact: Users across North America, Europe, and the Asia-Pacific region reported connection timeouts and login failures across Exchange Online, Outlook (desktop, web, and mobile), Teams, OneDrive, OneNote, and Copilot. The disruption also impacted third-party Microsoft 365 connectors used by OpenAI and Anthropic.
- Cyberattack Ruled Out: Microsoft executive Charles Lamanna confirmed there is no indication the outage was caused by a cybersecurity breach or malicious activity. Engineers paused non-essential deployments and reviewed recent configuration updates as potential triggers.
- Gradual Restoration Underway: After earlier mitigation steps encountered traffic surges, Microsoft began rerouting traffic to alternate infrastructure, expanding capacity via virtual machines, and bringing servers back online. In its latest updates on Friday morning, the company reported “positive results for server stability” as clients gradually reconnect.
Guidance for Users and IT Administrators
Microsoft advised IT administrators not to alter tenant configurations or reinstall desktop applications, noting that recovery is occurring in stages on the server side. Organizations can monitor real-time restoration progress via the public Microsoft Service Health Status portal or the official @MSFT365Status channel on X.
