Microsoft experienced a widespread system failure on November 13, 2026, disrupting key services including Outlook and Copilot. The outage began around 5:30 PM local time and lasted approximately six hours. Users reported inability to access email, calendar, and collaboration tools, with some experiencing complete service unavailability. The incident affected both personal and business users across multiple regions, including North America, Europe, and Asia.
The outage was traced to a technical issue within Microsoft's data centers, though the exact cause remains under investigation. Internal reports suggest a misconfiguration in a critical infrastructure component led to the disruption. Microsoft's engineering team worked to restore services, with full functionality returning by 11:30 PM local time. The company issued a public statement acknowledging the issue and apologizing for the inconvenience.
This incident follows a series of service disruptions in 2025, including a major Azure outage that impacted cloud operations for several major enterprises. Microsoft has been working to improve its infrastructure resilience, but this latest event highlights ongoing challenges in maintaining global service reliability. The company has not yet released detailed post-mortem analysis or specific steps for preventing similar incidents in the future.
