Status Page

O365 - Teams

2026-03-03	Status	Description
08:34 AM		Title: Users may be unable to reach agents through Dial-by-Extension for some auto attendants in Microsoft Teams User impact: Users may have been unable to reach agents through Dial-by-Extension for some auto attendants in Microsoft Teams. More info: Users may have heard the greeting, followed by approximately 15 seconds of silence, then they may have received the error message: “Sorry, I couldn’t help.” Final status: Further review determined that the recent service update caused a portion of the supporting Microsoft Teams service infrastructure to operate in a suboptimal state due to high CPU and memory constraint issues, resulting in impact. We've completed rolling back the offending service update, and confirmed through testing with a subset of affected users, as well as through monitoring service health telemetry that the impact has been remediated. Scope of impact: Any users attempting to reach agents through Dial-by-Extension for some auto attendants in Microsoft Teams may have been impacted. Start time: Thursday, February 19, 2026, at 5:00 AM UTC End time: Saturday, February 28, 2026, at 6:30 PM UTC Root cause: A recent service update caused a portion of the supporting Microsoft Teams service infrastructure to operate in a suboptimal state due to high CPU and memory constraint issues, resulting in impact. Next steps: - We're reviewing our update procedures to understand why impact to auto attendant functionality wasn't caught during the testing phase. This will allow us to drive service improvements by proactively identifying similar issues in the future and improve our update testing processes. This is the final update for the event.
07:41 AM		Title: Users may have seen autogenerated chats during Public Switched Telephone Network (PSTN) calls in Microsoft Teams User impact: Users may have seen autogenerated chats during PSTN calls, Call Queues or Auto Attendant calls in Microsoft Teams. More info: When placing outbound PSTN calls or receiving inbound PSTN calls, users may have seen a chat thread autogenerate in the Microsoft Teams desktop client and web app. This may have also affected Call Queue and Auto Attendant calls. Final status: We've confirmed with a subset of users that impact has been full resolved. Scope of impact: Any user interacting with PSTN calling scenarios in Microsoft Teams may have been impacted. Start time: Tuesday, February 10, 2026, at 10:37 AM UTC End time: Friday, February 27, 2026, at 7:52 PM UTC Root cause: A code issue in a recent deployment to the Microsoft Teams calling service introduced a compatibility complication between the affected calling scenarios and chats, which was causing chat threads to unexpectedly autogenerate in the Microsoft Teams desktop client and web app. 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.