Some users may have encountered delays when attempting to view received images in Microsoft Teams chats

Title: Some users may have encountered delays when attempting to view received images in Microsoft Teams chats

User impact: Users may have encountered delays when attempting to view received images in Microsoft Teams chats.

More info: Affected users may have also encountered delays for code snippets or call recordings. The delay duration could’ve varied, but was likely no longer than 30 seconds.

Final status: We’ve determined that a section of networking infrastructure, responsible for facilitating image loading in Microsoft Teams chats, was performing below acceptable performance thresholds and resulted in impact. We’ve redirected affected user traffic to alternate healthy infrastructure and we’ve confirmed via telemetry that impact has been remediated.

Scope of impact: Impact was specific to some users who were served through the affected infrastructure in Europe, Middle East, and Africa.

Start time: Tuesday, September 26, 2023, at 8:30 AM UTC

End time: Tuesday, September 26, 2023, at 9:35 AM UTC

Root cause: A section of networking infrastructure, responsible for facilitating image loading in Microsoft Teams chats, was performing below acceptable performance thresholds and resulted 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.