According to CoinMeta, a global service disruption by Microsoft resulted in Outlook, Teams, and Copilot being unavailable in 74 countries, affecting approximately 4.5 million working accounts. The outage lasted for over 5 hours, and Microsoft has not yet confirmed the cause. On Thursday noon, issues began with the Exchange Online system; by 1:25 p.m., the number of reports increased from less than 15 per minute to 19,650, with Outlook reporting levels reaching 2,000 times normal. A state government in the United States and two hospitals in Michigan lost access to their email services, and connections to ChatGPT and Claude were also affected. Microsoft stated that some servers were "inadvertently unavailable" and has paused all deployments to begin restarting them. Hours later, Microsoft claimed that the remedial measures "did not provide the expected relief." Teams had also been down for over an hour earlier in North America. Microsoft has not clarified whether there is a connection between the two incidents or pointed to any potential attacks. The number of reports dropped from a peak of nearly 130,000 to around 37,000, and some servers have recovered, but Microsoft has not announced that the issue has been fixed or how many customers were affected.