M365 Changelog: Limiting public webinar attendee joins to three concurrent devices

MC638135 – Currently in public webinars, an attendee can use their registration link to join and be present in a webinar with any number of devices. For public webinars, there is also a possibility for that attendee to forward their registration link to others who have not registered and have them join with the registered attendee’s join link. With this new update, only 3 concurrent join instances can be present in a webinar using the same registration join link. This means that attendees can now use only up to three devices to participate in a webinar.

This message is associated with Microsoft 365 Roadmap ID 147098.

When this will happen:

Standard Release: Microsoft will begin rolling out early August and expect to complete by mid-August.

How this will affect your organization:

Public webinars will now have a restriction on how many devices can actively be in a webinar using the same link.  

What you need to do to prepare:

Microsoft recommends informing your organization on this update and encouraging public webinar participants to keep their join links safe and not to share or forward them.