Microsoft outage strands financial firms without email for hours
The extent of the impact on individual institutions was not immediately clear, the publication said, and the immediate concern was interruption of internal operations rather than any confirmed failure of online banking or payment systems.
Insurance Business reported that the failure returned cloud concentration risk to brokers’ agendas, noting that users could not open mailboxes or sign in to Microsoft 365 apps and that Microsoft’s own status page would not load for a period.
Microsoft’s service health advisory named Exchange Online, Teams, SharePoint Online, Copilot for Microsoft 365 and Defender XDR among potentially affected services, with administrators directed to incidents EX1550543 and MO1550821 in the Microsoft 365 admin centre.
A Microsoft spokesperson told CNBC the company was investigating reports from Microsoft 365 users, “primarily issues with Exchange Online.”
The Microsoft 365 Status account on X first attributed the failure to elevated infrastructure load, then said the load came from “a number of servers being unexpectedly unavailable; straining the remaining infrastructure,” according to CNBC.
