Title: External users may be unable to join shared channels using the new Microsoft Teams desktop and web clients
User impact: External users may have been unable to join shared channels using the new Microsoft Teams desktop and web clients.
More info: Affected external users may have seen the following error: “You don’t have access to this channel.”
Final status: We’ve confirmed through our internal telemetry that the offending update has been successfully reverted throughout the affected environment.
Scope of impact: Any external user attempting to access shared channels using the new Microsoft Teams desktop and web clients may have been affected.
Start time: Thursday, February 8, 2024, at 12:00 AM UTC
End time: Tuesday, April 9, 2024, at 11:00 PM UTC
Root cause: A recent service update to the Microsoft Teams service infrastructure was resulting in impact.
Next steps:
– We’re reviewing our update testing and validation methods to better identify the potential for issues such as this prior to deployment to prevent similar impact in the future.
This is the final update for the event.
