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Registration blocked on Teams Webinar

Jessica Roy 0 Reputation points
2026-06-17T08:26:12.2033333+00:00

We have someone trying to register for a webinar - we have checked that capacity isn't full. It seems to block her at registration stage showing  ‘no entry’ sign 0 

Settings are so that anyone can register. Is there anything else this could be? Thank you

Microsoft Teams | Microsoft Teams for business | Meetings and calls | Schedule meetings
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  1. Liora D 16,470 Reputation points Microsoft External Staff Moderator
    2026-06-17T09:19:59.61+00:00

    Dear @Jessica Roy,

    I hope you’re having a good day.

    From your description, I understand that one attendee is currently unable to register for the webinar, even though you have already confirmed that the event has not reached capacity and the registration settings are configured to allow anyone to register.

    Before trying to determine the cause, I would like to understand a little more about the affected attendee and what they are seeing during registration.

    Could you please let me know:

    • Is the affected attendee an internal user, an external guest, or using a personal Microsoft account?
    • Is this affecting just one person, or are multiple attendees experiencing the same issue?
    • Would you be able to share a screenshot of the "‘no entry’ sign 0 " symbol or any error message that appears during registration?

    In the meantime, it may be worth asking the affected attendee to try a few quick tests:

    • Open the registration link in a different browser.
    • Try registering from an InPrivate/Incognito window.
    • Try registering from a different device, such as another PC or a mobile phone.

    I have seen cases where webinar registration issues were related to browser sessions, cached authentication data, cookie settings, or sign-in behavior rather than the webinar configuration itself.

    Once you have a screenshot and a bit more information about the affected attendee, I’ll be happy to take a closer look and help narrow down the cause.

    Please understand that our initial response does not always resolve the issue immediately. However, with your help and more detailed information, we can work together to find a solution.  

    Looking forward to hearing back from you with any updates or additional details. 

    Warm regards, 

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  2. AI answer

    2026-06-17T08:26:57.0266667+00:00

    The most likely causes are registration settings or meeting policy configuration rather than capacity.

    Check the following:

    1. Require registration setting on the webinar
      • Open the webinar in the Teams calendar.
      • Ensure Require registration is set to either For people in your org or For everyone, not None.
      • If Require registration was set to None when the webinar was created, it can cause join/registration issues. The documented workaround is to schedule the webinar with Require registration set to For people in your org or For everyone.
    2. Meeting policy: Who can register
      • If the tenant meeting policy was recently changed, the For everyone option can be unavailable or behave unexpectedly even if it appears configured.
      • An admin should run the following PowerShell cmdlet to reset the policy and then wait up to 24 hours for it to take effect: 
             Set-CsTeamsMeetingPolicy -WhoCanRegister Everyone
      • Also ensure AllowMeetingRegistration is enabled in the meeting policy if using legacy webinar/meeting registration scenarios.
    3. Anonymous/external join policy
      • If Anonymous join is turned off in Teams meeting settings, anonymous users cannot join webinars even if registration is open to everyone.
      • An admin should verify meeting settings as described in Manage meeting settings in Microsoft Teams and ensure anonymous join is enabled if external attendees need to register and join.
    4. Try a different browser/session
      • Ask the attendee to try registering in a different browser or an InPrivate/Incognito window to rule out cached auth/session issues.

    If, after these checks, the attendee still sees a “no entry”/blocked indicator at registration, an admin should verify the meeting policy values (AllowMeetingRegistration, AllowPrivateMeetingScheduling, and WhoCanRegister) match the recommended configuration for webinars and wait up to 24 hours after any policy change.

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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