Microsoft 365 Alert – Service Degradation – Microsoft Teams – Users may have been unable to utilize custom flows within the Microsoft Teams service – RESOLVED

12/10/2023 12:44:00 PM (GMT)

NHSmail Reference : INC38839913

Microsoft Reference : TM680842

Issue Status : RESOLVED

Issue Description : Users may have been unable to utilize custom flows within the Microsoft Teams service.

More info : Some users may have received a 500 error when they attempted to utilize custom flows created in Teams Graph, within the Microsoft Teams service

Final Update : 12/10/2023 12:44:00 PM – Microsoft determined that a recent standard service update inadvertently contained a code regression, which resulted in impact. They have reverted the offending change and have confirmed that service was restored after monitoring the environment.

Scope of impact : Impact was specific to some users who were served through the affected infrastructure.

Root cause: A recent standard service update inadvertently contained a code regression, which resulted in impact.

Next steps: Microsoft are reviewing their standard service update procedures to better identify similar issues during the development and testing cycles.