M365 Changelog: Increasing interactive meeting participants and chat from 300 to 1000

MC242587 – Updated April 22, 2021: Microsoft has updated the rollout timeline below. Thank you for your patience.

Currently, Microsoft allows only 300 users to be added to interactive meetings. They are going to increase the meeting participant and chat size from 300 to 1000.

This message is associated with Microsoft 365 Roadmap ID 65951 and 68844

When will this happen:

Microsoft will start rollout early May (previously early April) and expect to complete by mid-May (previously end of April).

How this will affect your organization:

Once this change has rolled out interactive meetings and chats will support 1000 participants.

What you need to do to prepare:

You may consider updating your training and documentation as appropriate.