Title: Some users may have seen incorrect presence information in Microsoft Teams
User impact: Users may have seen incorrect presence information in Microsoft Teams.
More info: Users may have also seen out-of-date Microsoft Teams status’ or out of office notes.
Final status: We’ve completed applying the aforementioned optimization actions and confirmed after a period of monitoring that impact is no longer occurring.
Scope of impact: Impact was specific to some users who were served through the affected infrastructure in Europe, Middle East, and Africa.
Start time: Monday, April 22, 2024, at 11:30 AM UTC
End time: Monday, April 22, 2024, at 1:41 PM UTC
Root cause: A section of caching infrastructure, responsible for reflecting correct Microsoft Teams presence information, was performing below acceptable performance thresholds.
Next steps:
– We’re reviewing performance data and trends on the affected caching infrastructure to understand why the performance issue occurred, in order to help prevent similar impact from happening again.
This is the final update for the event.
