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New Microsoft 365 outage impacts Teams, causes call failures

ID: c595925c-aea8-5a0c-b7d4-64d5d55d5696

STIX ID: report--c595925c-aea8-5a0c-b7d4-64d5d55d5696

Feed Name: Bleeping Computer

Date Published: 2025-03-03

Date Updated: 2026-03-27

Author: Sergiu Gatlan

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Microsoft investigated a Microsoft 365 outage that disrupted Teams call handling (auto attendants and call queues) and caused broader authentication/connectivity issues across multiple services, with notable impact in Canada. A fix has been deployed and service recovery confirmed after monitoring, while recent related incidents were attributed to a coding change in authentication systems and a DNS change affecting Entra ID; root cause details for the current outage remain under investigation.

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