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.
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Updated September 22, 2026: We have updated the timeline. Thank you for your patience.
What and why
Users are currently blocked from sending messages in Microsoft Teams while a file upload is in progress, which can disrupt real-time collaboration. With this update, file uploads will occur asynchronously in the background, allowing users to continue sending messages without interruption.
This message is associated with Microsoft 365 Roadmap ID 560813.
Added to roadmap: 24 apr 2026 | Last modified: 3 aug 2026
