Global Microsoft outage knocks out Outlook and other services
Microsoft’s Outlook email service has been down since late Thursday, disrupting businesses and government agencies in 74 countries and territories. On Friday the company said the outage was caused by heavy load on its infrastructure, not by malicious activity.
Nearly 20 hours after the first reports of service failures, the global Microsoft outage affecting 365, Outlook, and Teams finally came to an end on Friday morning. Outlook, Microsoft 365, and Teams were among the hardest hit platforms, causing widespread disruptions to communications and business operations. The incident affected users across 74 countries, with Outlook experiencing over 97,000 reported problems, Microsoft 365 over 38,000, and Teams around 4,500 incidents.
The outages also impacted services from companies like OpenAI and Anthropic, highlighting the heavy reliance on Microsoft's digital infrastructure. Microsoft initially blamed the outage on high workloads causing connectivity errors, particularly affecting Exchange Online, the cloud-based email system behind Outlook. However, the problem soon spread to other components of the Microsoft 365 ecosystem.
Technical issues like servers stuck in faulty states and restarting machines failing to respond properly complicated the situation. Microsoft responded by halting changes, redirecting traffic, and restarting affected servers. However, the restoration of all services has been uneven, and Microsoft warned that some disruptions might persist.
The incident exposed the critical reliance on a small number of technology providers for essential services. Hospitals, governments, businesses, and even airlines across various regions faced difficulties. Microsoft's executive vice president of Copilot, Charles Lamanna, ruled out a cyberattack, emphasizing the technical problems behind the outage. This incident underscores the importance of robust testing, backup systems, and alternative communication channels to mitigate the impact of major outages in the digital world.
Written by urgent.news from Colombia One's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
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