Maximum number of attendees in a MS Teams OnlineMeeting created with MS Graph

Question

Hello,

I have to create OnlineMeetings in MS Teams with MS Graph. Everything works fine until I try to add more than 750 attendees to the participants. Suppose I try to create an OnlineMeeting with 1000 attendees and send the request using MS Graph. The response I get contains only 750 attendees and the only way to change the attendee list is by updating the OnlineMeeting with a PATCH request. The documentation from Update - OnlineMeeting says the following:

Adjusting the attendees field of the participants property, such as adding or removing an attendee to the meeting, always requires the full list of attendees in the request body.

Therefore, it is impossible to add more attendees since I have to build a list with the current attendees (that was already limited to 750 during creation) and then add more attendees. This will result in the same attendee list because the new attendees will be dropped again.
I tried to find some documentation but the only hint I found was:

MC259845 – (Updated) Teams meeting invite recipients limit from Outlook

Updated June 16, 2021: We have updated the message below to clarify this impacts Win32 and Win64 clients. Thank you for your patience.

We're making some changes to limit the number of individual recipients allowed for scheduling a Teams meeting from Outlook (Win32 and Win64 client only at this time). We will apply this limit for meetings created with more than 750 recipients in the invite. This limit does not apply to the content of Distribution Lists and therefore we encourage users to use Distribution Lists when inviting a large number of attendees to a Teams meeting.

The MS Graph documentation does not mention any limitations for OnlineMeetings.
Is there a way to add more than 750 attendees to a MS Teams OnlineMeeting with MS Graph?

Answer 1

Hi @Anonymous , it is true that Graph does not currently support this feature, you can submit a feature request on user voice and I will vote for you

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