Microsoft 365 outage disrupts Teams, Exchange, and Copilot worldwide

A major Microsoft 365 outage is disrupting numerous cloud services worldwide, including Exchange Online, Teams, SharePoint, and Copilot, leaving users unable to access them. The disruption began in the early evening local time, triggered by an unexpected failure of a large number of servers, which overloaded the remaining infrastructure. Microsoft has halted deployments and is redistributing traffic globally to mitigate the impact, while restarting affected servers. Microsoft suspects the faulty health checks causing the failures may originate from a specific component responsible for processing server integrity. Administrators can track the issue via operation IDs EX1550543 and MO1550821, with alternative status updates available on status.cloud.microsoft.