How were the people you invited added to the meeting?
An anonymous user is a user who does not log in to the meeting directly via a link. A guest is someone who doesn't have a school or work account with your organization.
According to your description, we recommend that you check the settings for guest access in the admin center. You can set up guest access as follows. After setting, you need to wait a while
for it to take effect.
- Sign into the Microsoft Teams admin center.
- Select Users > Guest access.
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.