UPDATE FROM MICROSOFT : Recovery efforts are ongoing across impacted infrastructure. We are seeing early signs of stabilization, but service capacity has not yet returned to normal levels and health remains variable as traffic is carefully reintroduced. Our primary mitigation path continues to focus on service stability and controlled recovery. Engineering teams are cycling affected infrastructure through traffic drain, restart, remediation, and staged return-to-service while monitoring closely. We are also evaluating additional mitigation options to improve recovery speed and consistency. Network and traffic-management actions remain in progress, and we continue to prioritize backlog and queue health to preserve delayed mail during recovery. As part of this effort, we are extending the email timeout window to 48 hours to help protect delayed messages while service recovery continues.

Microsoft is experiencing a widespread service disruption that may affect access to Outlook, Teams and other Microsoft 365 applications. You may experience difficulties accessing these services or delays in sending and receiving emails.