TM1442034: Microsoft Teams Service Health Incident (Service Restored)

[365 Service Alert]

Some users may be unable to create or publish Microsoft Teams town hall or webinar events that include guest users.                                                                                                                                                                                         

Some users may be unable to create or publish Microsoft Teams town hall or webinar events that include guest users ID: TM1442034 Issue type: Incident Status Service Restored Impacted services Microsoft Teams Details Title: Some users may be unable to create or publish Microsoft Teams town hall or webinar events that include guest users User impact: Users may have been unable to create or publish Microsoft Teams town hall or webinar events that included guest users. Final status: We've corrected our fix, deployed it to the affected environment, and confirmed internally that impact is remediated Scope of impact: Impact was specific to some users attempting to create or publish Microsoft Teams town hall or webinar events that included guest users. Start time: Tuesday, July 28, 2026, at 4:02 PM UTC End time: Wednesday, July 29, 2026, at 9:30 PM UTC Root cause: A recent service update contained a code regression, which resulted in impact. Next steps: We're reviewing and improving our service update validation procedure to detect and prevent similar code issues in future updates. This is the final update for this event. Is this message helpful? Did you find this email helpful? Yes No To customize what’s included in this email, who gets it, or to unsubscribe, set your Service health preferences. If you are receiving this email because your Admin added you as a recipient, please contact your Admin to unsubscribe. Privacy Statement Microsoft Corporation, One Microsoft Way, ​Redmond, WA 98052​