# Microsoft apologizes for massive outage that caused chaos for businesses

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6 outlets covering · First listed: Business Insider, Nov 13, 2026, 5:37 AM · Read it: <https://www.businessinsider.com/microsoft-365-outage-outlook-teams-down-claude-what-we-know-2026-11>

A global Microsoft 365 outage across two days disrupted email, Teams, OpenAI's connector, and Claude for Outlook.

AI summary (may contain mistakes): A global Microsoft 365 outage disrupted services for governments, businesses, schools, and hospitals. Microsoft stated it has found no evidence of malicious activity, linking the disruption to failed health checks. The company is working on stability improvements and a full root-cause report is pending.

## Who's covering it

In the order they published:

- Nov 12, 2026, 2:57 PM: [Microsoft apologizes for massive outage that took down Outlook and other 365 services](<https://www.cnbc.com/2026/11/12/microsoft-outage-outlook-aws-google.html>) — CNBC (Business & finance, United States, rated Center)
  A Microsoft outage on Thursday and Friday affected users of services like Outlook, Teams and 365.
- Nov 13, 2026, 12:18 AM: [Global Microsoft Outage](<https://www.cnn.com/2026/11/12/business/live-news/microsoft-global-outage-intl-hnk>) — Hacker News (Aggregator, United States)
- Nov 13, 2026, 5:37 AM: [Microsoft apologizes for massive outage that caused chaos for businesses](<https://www.businessinsider.com/microsoft-365-outage-outlook-teams-down-claude-what-we-know-2026-11>) — Business Insider (Digital news, United States, rated Lean left)
  A global Microsoft 365 outage across two days disrupted email, Teams, OpenAI's connector, and Claude for Outlook.
- Nov 13, 2026, 6:48 AM: [Microsoft’s massive Outlook outage might be over](<https://www.theverge.com/tech/1032862/microsoft-outlook-down-outage>) — The Verge (Digital news, United States)
  Service is recovering for Microsoft Outlook and 365 after an almost two-day outage impacting millions of users around the world. While some apps and features are still running in a degraded state on Friday morning, some people (including Verge staffers) reported that access to their emails had been restored, though the flow of Outlook mail
- Nov 13, 2026, 8:52 AM: [Here’s what to know about the Microsoft outages — and what may have caused them](<https://nypost.com/2026/11/13/business/heres-what-to-know-about-the-microsoft-outages-and-what-may-have-caused-them/>) — NY Post (Newspaper, United States, rated Lean right)
  Microsoft said it is seeing progress in North America as the tech giant works to resolve one of the biggest service outages in recent history.
- Nov 13, 2026, 11:15 AM: [The Microsoft Outage Is a Warning for the World](<https://www.wired.com/story/the-microsoft-outage-is-a-warning-for-the-world/>) — Wired (Magazine, United States)
  Countless businesses, schools, hospitals, and governments have found out the hard way what it means to rely on a single company’s systems to get things done. And next time could be even worse.