Microsoft 365 Service Disruption and Reliability

A widespread, multi-region disruption affected Outlook, Exchange, Teams, SharePoint, Copilot and other services, with reported impacts across business, government, healthcare and education and coverage saying it stretched into a second day. Microsoft has said recovery is broad and stable, but the root cause, sustained recovery and full customer impact remain unclear. Reported $100M–$400M downside estimates depend on possible customer credits and are not confirmed costs; insured-loss estimates are likewise not established.