What and Why
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.
Rollout Schedule
- General Availability (Worldwide): We will begin rolling out in early July 2026 and expect to complete by late July 2026.
Impact on Your Organization
Who is affected
- Admins managing Microsoft Teams meetings, webinars, and town halls
- Event organizers who use RTMP-In with external encoders
Platforms/Services
- Microsoft Teams (meetings, webinars, and town halls)
What will happen
- New meetings, webinars, and town halls that use RTMP-In will require updated network access.
- Admins must allow the required ports and domain endpoints for RTMP-In streaming.
- Existing meetings, webinars, and town halls already configured with RTMP-In will continue to function through the end of 2026.
- RTMP-In continues to allow organizers to stream content into Teams from external hardware or software encoders.
- Without these updates, organizers may be unable to create or stream RTMP-In events, and newly created events may fail after mid-July 2026.
Required network endpoints:
- Ports: 50118 and 50119 (RTMP/RTMPS)
- Domain: *.rtmpingest.mcr.teams.cloud.microsoft
Action Required/Recommendations
Action required by mid-July 2026.
- Review your organization’s firewall and network configuration.
- Allow outbound access to:
- Ports 50118 and 50119 (RTMP/RTMPS)
- Domain: *.rtmpingest.mcr.teams.cloud.microsoft
- Validate connectivity against official Microsoft 365 endpoint and firewall guidance.
- Communicate this change to your networking and IT teams.
- Update internal documentation if you support RTMP-In streaming scenarios.
Learn more: Manage RTMP-In for Teams meetings, webinars, and town halls | Microsoft Teams | Microsoft Learn
Compliance considerations
No compliance considerations identified. Review as appropriate for your organization.