Users may have been unable to join calls or meetings in Microsoft Teams for Mac

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.

Title: Users may be unable to join calls or meetings in Microsoft Teams for Mac User impact: Users may be unable to join calls or meetings in Microsoft Teams for Mac. Current status: Further review of the suspected code change indicates it may not be the cause of impact for this event. We're reassessing our root cause understanding and reviewing service logs to isolate the source of impact, so that we can determine our next steps regarding impact remediation. Scope of impact: Some users attempting to join calls or meetings in Microsoft Teams for Mac may be impacted. This section may be updated as our investigation continues. Next update by: Friday, September 4, 2026, at 4:00 PM UTC

Title: Users may be unable to join calls or meetings in Microsoft Teams for Mac User impact: Users may be unable to join calls or meetings in Microsoft Teams for Mac. Current status: We've identified a code change that's causing the service infrastructure responsible for call and meeting functionality to fail to process some requests, resulting in impact. We're assessing potential remediation actions to address the problematic code change and restore service functionality. Scope of impact: Some users attempting to join calls or meetings in Microsoft Teams for Mac may be impacted. This section may be updated as our investigation continues. Start time: Thursday, July 2, 2026, at 3:09 PM UTC Root cause: A code change is causing the service infrastructure responsible for call and meeting functionality to fail to process some requests, resulting in impact. Next update by: Thursday, September 3, 2026, at 9:30 PM UTC

Title: Users may be unable to join calls or meetings in Microsoft Teams for Mac User impact: Users may be unable to join calls or meetings in Microsoft Teams for Mac. Current status: We're investigating a potential issue with Microsoft Teams and checking for impact to your organization. We'll provide an update within 30 minutes.