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Teams Webinar allowing guest participants eventhough selected

YH 0 Reputation points
2026-06-04T07:48:22.5833333+00:00

Hello, I'm trying to set up a Webinar due to the registration feature, so I can verify registered email, scrutinise the attendees list from lobby as it's a quite private event. 2 issues faced

  1. When i configure it, i selected "attendees with a registration link can bypass lobby", i tried in incognito mode from a forwarded registered participant and able to key in an anonymous name and join
  2. Also cant find this setting: Turn the Reject anyone who can't bypass the lobby toggle on to reject anyone who isn’t registered for your event.

Any advice?

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Microsoft Teams | Microsoft Teams for business | Meetings and calls | Other
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  1. Henry-N 13,880 Reputation points Microsoft External Staff Moderator
    2026-06-04T09:19:07.6733333+00:00

    Hi @YH, 

    Thank you for posting your question in the Microsoft Q&A forum. 

    Regarding your concern about anonymous users being able to register and join a webinar event, please see the recommendations below: 

    First issue  Prevent anonymous users from registering and joining the event  If you want to ensure that only authenticated users can register and join, please follow these steps: 

    1. Go to the Microsoft Teams Admin Center 
    2. Navigate to Meeting policies 
    3. Select Global (Org-wide default)  User's image
    4. Disable the option "Anonymous users can join a meeting unverified"  User's image

    You could refer to this article for a better view : IT Admins - Manage lobby options in Microsoft Teams - Microsoft Teams | Microsoft Learn

    Once this setting is disabled, users will be required to sign in with a work account to register and join the event. Users without a valid work account will not be able to participate. 

    Second issue – Control lobby bypass  To restrict who can bypass the lobby: 

    • Set "Who can bypass the lobby" to "Only organizers and co-organizers"  User's image

    With this configuration, only organizers and co-organizers can join directly, while all other participants must wait in the lobby until admitted.    

    If I’ve misunderstood any part of your requirement, please feel free to clarify so I can assist you more accurately. 

    Thank you again for your time and patience. While this initial response may not fully resolve the issue, your feedback will help refine the solution further. 

    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  

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