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Microsoft Teams: Unblock users to send message while file is uploading in the background

Why it matters: Upcoming change

Large file sharing in Teams today introduces blocking behavior, forcing users to wait for uploads to complete and disrupting real-time collaboration. To improve productivity and reduce perceived latency, we are introducing asynchronous file uploads. This allows users to continue sending messages while the file uploads in the background, enabling a more seamless and uninterrupted collaboration experience.

Target July CY2026Cloud Worldwide, GCC, GCC High, DoDPlatform Desktop, Mac, WebSource updated 2026-05-29

Affected: Microsoft Teams

Change history

2026-06-23 · First seen

View at Microsoft →