Harald_Steindl Yes it is only logical that an MTR cannot join a Zoom authenticated meeting. From an end users perspective in our organization how do they know that? Example: We publish instructions on how to Direct Guest Join. The result is nothing. So we do some digging and find two major impediments.
1) Many Zoom users use their personal meeting rooms, roughly like an IM in Teams chat. The MTR app does not treat a personal meeting room as a meeting (having a time-date event). So there is no meeting booked.
2) We cross the hurdle of #1. Now a Zoom meeting appears on the MTR. However when the meeting is joined it displays a notice that indicates it will not join. I apologize I did not right down the wording. Some Zoom users do not know about the authentication. But you get the idea, folks just get frustrated..
So we are telling our end users there is Direct Guest Join, but it may take effort on the Zoom organizers part to be successful. Now we know test in advance to avoid chaos and high levels of frustration. Sorry if this is off your original topic.
I share this so others may be aware there are some steps the Zoom user may need to know for the Direct Guest Join to work. The Zoom users my not know all the information needed to participate in a successful Zoom to MTR meeting.