Microsoft Teams: Town hall concurrent attendee to increase to 100,000 for organizers with a Teams Premium license

Organizers with a Teams Premium license can now host town hall events with up to 100,000 concurrent attendees, up from the previous limit of 50,000. For events exceeding 20,000 attendees, some interactivity features will be disabled. This feature will roll out from late June 2025 to late July 2025. Contact Microsoft Leap to enable this feature.

Updated June 13, 2025: We have updated the timeline below. Thank you for your patience.

Organizers of town hall instances can now reach a wider audience in a single event with an expansion to a maximum of 100,000 simultaneous attendees. This increase serves as a significant jump from the previous attendee cap of 50,000 for organizers with a Teams Premium license. The quality and stability of town halls up to this new limit will remain constant, providing high-quality and reliable content for participants. For events with more than 20,000 concurrent attendees, some interactivity features are disabled for all attendees, including chat for attendees and reactions.

This message is associated with Microsoft 365 Roadmap ID 484124.

[When this will happen:]

General Availability (Worldwide): We will begin rolling out late June 2025 (previously early June) and expect to complete by late July 2025 (previously mid-June).

[How this will affect your organization:]

There will be no change to the organization. This is available to enable for organizers who are hosting very large events 

[What you need to do to prepare:]

If the organizers, with a Teams Premium license, need to host an event larger than 20,000 but fewer than 100,000 attendees, they will need to contact Microsoft Leap to enable this feature.

More information is available here: Microsoft 365 Live Event Assistance Program.