Microsoft 365 is back online after a 24-hour global outage that knocked out Outlook, Teams, Copilot, and other core services across more than 70 countries. The disruption began around noon ET Thursday — November 12, 2026, and persisted through Friday morning, with Microsoft’s status page confirming “broad recovery” by 19:00 ET on November 13.
It was not a cyberattack. It was not AI-related. It was a network capacity upgrade gone wrong, triggered by a recent network change, per Microsoft’s official statement. The company says the underlying issue has been fixed.
Service restoration is ongoing in some regions and subsystems, but full normalization may take hours longer. Emails queued during the outage are being delivered with up to a 48-hour delay, meaning users should brace for inbox floods and notification avalanches over the next few hours. No data loss has been reported.
Microsoft promises a full post-incident report once its internal review concludes. This wasn’t just an inconvenience. Japan’s national health system reported delayed patient record access. U.S. Air traffic control support teams lost real-time comms with regional airports.
Multiple state law enforcement agencies confirmed they could not dispatch or log incident reports via standard Microsoft 365 tools. Hospitals in Texas, Ontario, and New South Wales reported disruptions to scheduling, lab result delivery, and internal staff messaging. The scale confirms what many already knew: Microsoft 365 isn’t software anymore.
It’s infrastructure, and it just failed like a power grid. Microsoft hasn’t disclosed how many customers were affected, but Downdetector logged over 1.2 million outage reports globally at peak. The company has not announced compensation, service credits, or SLA adjustments for enterprise customers. That decision is expected in the coming days.
For now, the priority is stability, and damage control.
TBFiled by The Tech Business Desk
Big tech, startups, earnings, regulation and policy — the decisions that shape the products.
More from this desk →
Be the first to comment
Join the argument. No password, just your email or a passkey.