Microsoft Investigating Teams Calling Issue Blocking Users From Making or Receiving Calls

Microsoft is investigating a service incident that is preventing some users from placing or receiving calls through Microsoft Teams. The company disclosed the issue through its verified Microsoft 365 Status account on September 21, directing administrators to incident reference TM1475580 in the Microsoft 365 admin center. The advisory is narrowly framed: Microsoft said only that “some users” may be unable to make or receive Teams calls. The brief public notice did not identify affected regions, customer segments, call types, root cause, or a restoration timeline. That distinction matters. Organizations should avoid assuming that the issue affects chat, meetings, messaging, file sharing, identity services, or the wider Microsoft...

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