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New Microsoft 365 outage impacts Teams, causes call failures

Over the weekend, Microsoft said it addressed another Microsoft 365 outage that affected Outlook and Exchange Online authentication and caused Teams and Power Platform degraded functionality. Redmond linked this weekend's incident to a coding issue in a recent update to Microsoft 365 authentication systems. Since the incident started more than one hour ago, outage monitoring service Downdetector has received hundreds of reports, with affected users saying they're also experiencing authentication problems. Last week, Microsoft fixed another issue caused by a DNS change that triggered Entra ID authentication failures for customers using Seamless SSO and Microsoft Entra Connect Sync. "Users may not be able to receive calls placed through Microsoft Teams-provisioned auto attendants and call queues," the company said in a new service alert (TM1022107) in the Microsoft 365 admin center. However, a Monday advisory revealed that Exchange Online users still have issues accessing their calendars and email messages using the iOS native mail app.

This Cyber News was published on www.bleepingcomputer.com. Publication date: Mon, 03 Mar 2025 18:55:16 +0000

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