(Updated) Microsoft Teams: RTMP-In port and domain changes required

(Updated) Microsoft Teams: RTMP-In port and domain changes required

Microsoft Teams paused the RTMP-In port and domain update, improving streaming reliability. By mid-July 2026, admins must allow outbound access to ports 50118, 50119, and domain *.rtmpingest.mcr.teams.cloud.microsoft for new RTMP-In events. Existing events remain functional through 2026.

2026-07-17T16:27:57.297Z

Updated message,User impact,Admin impact

<p>Updated July 17, 2026: We have paused release of this feature at this time. We will announce via Message center when we are ready to proceed. We apologize for any inconvenience.&nbsp;</p><p><b>[What and Why]</b></p> <p>Microsoft Teams is updating the port and domain requirements for Real-Time Messaging Protocol (RTMP)-In, which enables organizers to stream content into meetings, webinars, and town halls using external hardware or software encoders. This change improves reliability and scalability for Teams streaming scenarios.</p> <p><b>[Rollout Schedule]</b></p> <ul> <li><b>General Availability (Worldwide)</b>: We will announce via Message center when we are ready to proceed.</li> </ul> <p><b>[Impact on Your Organization]</b></p> <p><i>Who is affected</i></p> <ul> <li>Admins managing Microsoft Teams meetings, webinars, and town halls</li> <li>Event organizers who use RTMP-In with external encoders</li> </ul> <p><i>Platforms/Services</i></p> <ul> <li>Microsoft Teams (meetings, webinars, and town halls)</li> </ul> <p><i>What will happen</i></p> <ul> <li>New meetings, webinars, and town halls that use RTMP-In will require updated network access.</li> <li>Admins must allow the required ports and domain endpoints for RTMP-In streaming.</li> <li>Existing meetings, webinars, and town halls already configured with RTMP-In will continue to function through the end of 2026.</li> <li>RTMP-In continues to allow organizers to stream content into Teams from external hardware or software encoders.</li> <li>Without these updates, organizers may be unable to create or stream RTMP-In events, and newly created events may fail after <b>mid-July 2026</b>.</li> </ul> <p><b>Required network endpoints:</b></p> <ul> <li><b>Ports: 50118 and 50119 (RTMP/RTMPS)</b></li> <li><b>Domain: *.rtmpingest.mcr.teams.cloud.microsoft</b></li> </ul> <p><b>[Action Required/Recommendations]</b></p> <p><b>Action required by mid-July 2026.</b></p> <ul> <li>Review your organization’s firewall and network configuration.</li> <li><b>Allow outbound access to:</b></li> <ul> <li><b>Ports 50118 and 50119 (RTMP/RTMPS)</b></li> <li><b>Domain: *.rtmpingest.mcr.teams.cloud.microsoft</b></li> </ul> <li>Validate connectivity against official Microsoft 365 endpoint and firewall guidance.</li> <li>Communicate this change to your networking and IT teams.</li> <li>Update internal documentation if you support RTMP-In streaming scenarios.</li> </ul> <p><b>Learn more:&nbsp;</b><a href="https://learn.microsoft.com/microsoftteams/meetings-rtmp-in" target="_blank">Manage RTMP-In for Teams meetings, webinars, and town halls | Microsoft Teams | Microsoft Learn </a> </p> <p><b>[Compliance considerations]</b></p> <p>No compliance considerations identified. Review as appropriate for your organization.</p>