Users may have been unable to join calls or meetings in Microsoft Teams for Mac
ID: TM1466659
Issue type: Incident
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Impacted services
Microsoft Teams
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Details
Title: Users may have been unable to join calls or meetings in Microsoft Teams for Mac
User impact: Users may have been unable to join calls or meetings in Microsoft Teams for Mac.
Final status: We've determined that a code change caused the service infrastructure responsible for call and meeting functionality to fail to process some requests, which resulted in impact. We've deployed a fix and confirmed that impact has been resolved after an extended period of monitoring service availability.
Scope of impact: Some users attempting to join calls or meetings in Microsoft Teams for Mac may have been impacted.
Start time: Sunday, August 23, 2026, at 4:32 PM UTC
End time: Wednesday, August 26, 2026, at 8:51 PM UTC
Root cause: A code change caused the service infrastructure responsible for call and meeting functionality to fail to process some requests, which resulted in impact.
Next steps: We're reviewing our update procedures to better identify similar issues during our development and testing cycles.
This is the final update for the event.
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