Microsoft Teams will update RTMP-In port and domain requirements by mid-July 2026 to improve streaming reliability. Admins must allow outbound access to ports 50118, 50119, and domain *.rtmpingest.mcr.teams.cloud.microsoft. Existing RTMP-In events work until end of 2026; new events need updated network settings.
Applies to: Microsoft Teams
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).