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Are the Microsoft Outlook Outage and FAA Ground Stop Connected?

The FAA said communications problems at regional centers forced the second nationwide ground stop since 2001, while Microsoft denied any link to its outage.

  • On Friday, the Federal Aviation Administration issued a rare nationwide ground stop for all departing flights due to communications problems affecting multiple Air Route Traffic Control Centres.
  • A massive Microsoft outage began Thursday, disrupting Outlook, Teams, and Copilot after a network capacity issue surfaced following a recent infrastructure change.
  • Homeland Security Secretary Markwayne Mullin described the events as "separate issues," while Microsoft wrote it had "no indication" the FAA ground stop was related to its services.
  • Downdetector recorded reports peaking at 130,000 users impacted, while the House of Representatives and agencies in Australia, Japan, Singapore, and the Philippines reported operational interruptions.
  • These incidents renewed attention to vulnerabilities in critical infrastructure, with Microsoft promising a full post-incident report after completing its technical review.
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Are the Microsoft Outlook outage and FAA ground stop connected?

Are the Microsoft Outlook outage and FAA ground stop connected?

·Greenville, United States
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Reuters broke the news in London, United Kingdom on Friday, November 13, 2026.
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