A global Microsoft outage has disrupted Outlook, Teams, Copilot and other Microsoft 365 services for more than 12 hours. The disruption began on Thursday in the Americas and spread worldwide within an hour, with reports from 74 countries and territories. Microsoft has ruled out a cyberattack. Recovery measures including traffic rerouting and server restarts have produced only partial improvements. Banks, governments, airlines, schools and courts reported impacts. OpenAI and Anthropic both reported problems with their Microsoft 365 connectors, which allow ChatGPT and Claude to access emails, calendars and Teams data. The outage illustrates how failures at a major productivity platform can cascade to third-party AI services. Australia’s home affairs minister suggested the cause may resemble a failed update similar to the 2024 CrowdStrike incident, though Microsoft has not confirmed the root cause.
A global Microsoft outage has disrupted Outlook, Teams, Copilot and other Microsoft 365 services for more than 12 hours. The disruption began on Thursday in the Americas and spread worldwide within an hour, with reports from 74 countries and territories. Microsoft has ruled out a cyberattack. Recovery measures including traffic rerouting and server restarts have produced only partial improvements. Banks, governments, airlines, schools and courts reported impacts. OpenAI and Anthropic both reported problems with their Microsoft 365 connectors, which allow ChatGPT and Claude to access emails, calendars and Teams data. The outage illustrates how failures at a major productivity platform can cascade to third-party AI services. Australia’s home affairs minister suggested the cause may resemble a failed update similar to the 2024 CrowdStrike incident, though Microsoft has not confirmed the root cause.