Microsoft outage disrupts Outlook and Teams for millions, no cyberattack found

Microsoft experienced a major service outage on November 12, 2026, disrupting Outlook, Teams, and Microsoft 365 for millions of users worldwide. The tech giant confirmed the disruption was not caused by a cyberattack. The problems began after midday Eastern time and continued into the night, affecting companies and some government operations. Charles Lamanna, Microsoft's executive vice president, stated on X that there was no indication of malicious activity. Around 130,000 users reported issues on Downdetector, with many unable to send or receive emails. Thousands also reported problems with Microsoft's AI assistant Copilot and wider Microsoft 365 services. Microsoft said it was working to address the issue and would share more information as it became available.