Title: Some users may see a stale profile or unknown user for federated users in external chats and calls in Microsoft Teams
User impact: Users may see a stale profile or unknown user for federated users in external chats and calls in Microsoft Teams.
More info: Impacted users may see the issue occurring for federated users in chats, calls, channels, and any other service feature that shows federated users.
Specifically, users may see outdated profile information for federated users or show as “Unknown User” in Microsoft Teams if the browser cache doesn’t contain stale profile information for federated users in external chats, calls or any other scenario which includes federated users.
Impact occurs on all Microsoft Teams clients.
Current status: Our investigation of the code base responsible for syncing profile information has identified several potential performance optimizations that may reduce or remediate impact. We’re validating the efficacy of these optimizations, after which we’ll evaluate methods to implement them in the impacted service environment.
Scope of impact: Some users interacting with federated users on any Microsoft Teams client may be impacted.
Root cause: An imbalance of service load on a portion of infrastructure responsible for populating federated users’ data and information in Microsoft Teams that is resulting in impact.
Next update by: Tuesday, March 12, 2024, at 1:30 AM UTC
