More than 430 million people use Microsoft 365 apps, and this week a big share of them couldn't count on Outlook, Teams or Copilot.

More than 430 million people use Microsoft 365 apps, and this week a big share of them couldn't count on Outlook, Teams or Copilot. Problems began around midday Thursday, November 12 (US time), stretched into Friday and beyond, with outage reports from more than 70 countries and territories. Recovery came gradually, varying by service and region.

The damage centered on features tied to Exchange Online, Microsoft's cloud email and scheduling service. Microsoft says the incident traced to an issue during an earlier network capacity upgrade that surfaced after a recent network change, with servers becoming unexpectedly unavailable.

On Saturday, November 14, Microsoft confirmed on X that services were fully restored: "We have completed our efforts to address the underlying issue of the incident and restored service to the remaining impacted customers and regions."

What sticks with me is that this came from routine maintenance, a capacity upgrade meant to make things better. When so much of the world's email and scheduling runs through one provider, a single bad change has a very long reach. I'd love to know how many organizations had any workable fallback for a full day without Exchange Online, and how many will build one now. $MSFT

Sources:
AP via mynews13.com: https://mynews13.com/fl/orlando/ap-top-news/2026/11/14/microsoft-says-services-fully-restored-after-hourslong-global-outage
BBC via Yahoo: https://www.yahoo.com/news/world/articles/microsoft-deeply-sorry-global-outage-204957809.html
Rappler: https://www.rappler.com/technology/microsoft-service-restoration-november-14-2026/

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