Major Microsoft outage hits Exchange Online and Teams across the Americas

wmchen · hn · 2026-11-13

Microsoft is investigating a major Microsoft 365 outage in the Americas: users can't access Exchange Online mailboxes via multiple connection methods (incident EX1550543), and Teams functionality is degraded across North America (incident TM1550488).

Status updates are being posted on the Microsoft 365 service health dashboard and the @MSFT365Status account.

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