Digital Agency of Japan

Microsoft's core Microsoft 365 services, including Outlook and Teams, suffered a global outage lasting over 10 hours without full recovery. Microsoft ruled out a traffic surge and traced the failure to a large number of servers failing automated health checks and being marked offline, overloading the remaining capacity. Japan's GSS government platform was affected, forcing agencies to fall back on phones and chat tools, while connection components relied on by OpenAI and Anthropic were also impacted.