Microsoft outage hits Outlook, Teams and Copilot across 74 countries
The outage also affected other technology companies, including AI firms.
A significant Microsoft outage left thousands of users unable to access crucial services such as Outlook, Teams, Copilot, Exchange Online, SharePoint Online, Microsoft 365 Copilot and Microsoft Defender XDR across 74 countries. Reports emerged on Thursday, with the disruption affecting services in multiple regions shortly after 1pm Eastern Time.
Users on the outage-tracking website Downdetector reported problems with Outlook, experiencing difficulties sending and receiving emails, and accessing their inboxes. The incident also impacted other technology companies, including Anthropic and OpenAI, which depend on Microsoft's infrastructure for certain services. Microsoft acknowledged the disruption, stating that some servers were unavailable and failing automatic health checks, which placed additional strain on the remaining operational infrastructure.
The company was testing a configuration change to redistribute elevated traffic across parts of its infrastructure and restarting affected services to restore availability. Microsoft reported "positive results" from efforts to restart affected infrastructure and restore server availability, monitoring performance before expanding recovery measures.
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