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Major Microsoft Outlook outage disrupts services in 74 countries

Major Microsoft Outlook outage disrupts services in 74 countries

Summary

Microsoft Outlook, Teams and Copilot experienced a global outage on November 12, disrupting service in 74 countries and territories. Microsoft linked the connectivity problems to heavy loads on infrastructure across multiple regions and reported only limited recovery hours later.

Key Facts

  • Downdetector reported service disruptions in 74 countries and territories.
  • Microsoft said elevated infrastructure loads across multiple regions likely caused the connectivity errors.
  • The outage affected Microsoft 365 services, including Outlook, Teams and Copilot.
  • Downdetector recorded about 130,000 U.S. reports of Outlook problems shortly after 1 p.m. Eastern Time.
  • By 6 p.m. Eastern Time, about 37,000 users were still reporting Outlook issues.
  • Microsoft said it paused deployments, redirected traffic away from affected infrastructure and restarted affected servers.
  • Microsoft reported limited recovery as it worked to restore capacity and reconnect users.
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