Hi @Audi86 It depends on your user type. If this gmail user is join as a guest in your organization, there is no issue when join in Teams meeting. If not, this user will have no access to join Teams meeting. If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment". Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.
