As we have become more comfortable with the concept of working within a Team in Microsoft Teams, I see more and more people using Channel Meetings instead of the familiar meeting scheduled through an email client.  With that transition, I have also saw an odd issue reported a few times recently that required a little investigation. 

In the usual Channel meeting experience, members of the Team will see a post in the channel that the meeting was started in along with a “Join” button to participate in the action.

For the reported scenario, though, a Channel meeting is actively in progress however, someone (or multiple someones) report that they are unable to join.  This issue goes beyond the usual challenges that we see with joining online meetings.  In this case, we can see that the meeting has started but they do not even see a “Join” button in the channel to attempt to participate in the meeting.