Overview
- Microsoft reported a large-scale outage that began Thursday and affected Outlook, Teams, Microsoft Copilot and other Microsoft 365 services for many users worldwide.
- Public monitors logged a surge of complaints with Outlook reports peaking near 97,000 and the disruption spreading to more than 70 countries, according to multiple news agencies.
- Microsoft said some servers became unexpectedly unavailable and it was moving traffic to other equipment and rebooting affected machines while recovery work continued.
- OpenAI and Anthropic reported service interruptions tied to Microsoft connectivity, and governments and firms in Japan, Singapore and elsewhere shifted to phone, SMS and alternate chat for urgent communications.
- Officials in Japan and Microsoft said there was no evidence the outage was caused by a cyberattack, and the incident underlines how outages at a central cloud provider can cascade into broad operational problems for businesses and public services.