Title: Some users may have been unable to send chat messages using any Microsoft Teams application
User impact: Users may have been unable to send chat messages using any Microsoft Teams application.
More info: Impacted Microsoft Teams applications included, but weren’t limited to:
– Desktop
– Web
– Mobile
Final status: Our extended period of monitoring has confirmed that impact is no longer occurring and service has been restored.
Scope of impact: Impact was specific to some users who were served through the affected infrastructure in the United States, Europe and United Kingdom.
Start time: Thursday, April 4, 2024, at 8:00 AM UTC
End time: Thursday, April 4, 2024, at 8:15 AM UTC
Root cause: A section of infrastructure, responsible for facilitating chat messages in Microsoft Teams, was unexpectedly performing below acceptable performance thresholds and resulting in impact.
Next steps:
– We’re analyzing performance data and trends on the affected infrastructure to help prevent this problem from happening again.
This is the final update for the event.
