Microsoft cloud outage hits Outlook and other services worldwide

Microsoft's Outlook email and other cloud services have been disrupted for hours, affecting numerous businesses and consumers worldwide. The outage began overnight and has left many Outlook mailboxes unreachable. Microsoft reported issues with Exchange mailboxes in the US before expanding to global impacts on Microsoft 365 users. Teams calendar functions and the Copilot AI assistant are also affected. The company has attempted multiple fixes, including rerouting traffic and restarting servers, but has faced setbacks as servers crash again under data load. The outage follows a similar large-scale disruption in late August, also caused by cloud infrastructure problems. Microsoft continues to work on isolating infrastructure parts, reporting some positive results, though the duration of the current disruption remains unclear.