Microsoft Teams expands breakout room limits to 1000 participants and 200 rooms

Microsoft is increasing the number of participants who can join a Teams meeting using breakout rooms. Until now, breakout rooms were available in meetings with up to 300 attendees.

With this update, organizers will be able to use breakout rooms in meetings with up to 1’000 participants.
This means that even very large meetings can now be split into smaller group discussions without organizers having to keep the overall meeting small for breakout rooms to work.

Alongside the higher attendee limit, organizers will be able to create up to 200 breakout rooms within a single meeting (up from 50 previously), giving them more flexibility to divide participants into smaller groups for discussion, collaboration, or hands-on activities suited to their session.

For anyone already using breakout rooms in smaller meetings, nothing about the experience itself will change; this update simply extends the same feature to much larger meetings.
This expanded breakout room capacity is included with Microsoft Teams as part of existing Microsoft 365 and Office 365 subscriptions. The rollout should be completed by late July 2026.

Updated 5 August 2026:
The rollout should be completed by September 2026.