Prevent users from joining a meeting
Add a setting to prevent users who are not a member of the Team/O365 Group from joining the Teams meeting. This setting should exist in the Outlook client as well as the Teams client, web app, and mobile app.
Similarly, prevent people who were not invited directly by the meeting organizer from joining the meeting. (e.g., meeting invite was forwarded or meeting link was copied and sent to user who was not directly invited).

72 comments
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R Needham commented
I agree with this also. I feel that there needs to be an organisation control that can identify domains that can access the meetings (Trusted guests - but specified on a whole company/school basis).
Alternatively there needs to be a removal of links to meetings that can be shared when a person is set as an attendee in the lesson/meeting.
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ML commented
We're having the same problem now. It is a safeguarding issue in schools and it would really help if we can stop outsiders from joining lessons. We need to have an option where only invited teams members can join the meeting.
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Anonymous commented
In education environment there must be an option that only people from organization or even more - only people from the specific team can join a meeting happening it this team. Students are having fun by writing bad words in their names when trying to join as guests. Students from other schools should not join our school meetings (all municipality schools are in same organization).
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CJ commented
Just tested this scenario here:
1. User in ORG sends MEETING invite to another ORG member (same ORG)
2. ORG member forwards to OUTSIDE ORG user.
3. Who changes his name to "WHAT EVER HE WANTS" then clicks the JOIN MEETING LINK.......
BUT for us.....they see this...... which I think is just in how we have applied GUEST access as RESTRICTIVE. -
James commented
This needs to be a priority feature, our students are forwarding the invites all over the place
The get sent to the lobby, but some of the invitees are putting in student names and staff ignore the (Guest) bit and allow them in!
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Anonymous commented
In our school it's a big problem that pupils can invite external persons into our meetings (lessons). It would be very nice, if only organizers could invite people!
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Karen commented
People are re-naming themselves as people who are already in the user group and entering a classroom ie calling themselves 'Harry Potter' if they know there is a Harry Potter in the classroom. The teacher then lets them in. There should be some way of preventing a person entering who is NOT a member of your organisation for all class teams. But we don't want it for the whole organisation, or we couldn't have meetings with externals, such as parents.
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Mark Kaplan commented
I will add to this that a setting is needed so the presenter can prevent any joins after the presentation has started.
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J Butler commented
This issue really does need resolving. We have pupils who are passing the invitation to others, so that the lobby is filling with people who are not members of the Class (Team). In addition the guest attendees are able to change their names. This is a big problem.
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Anna McDonnell commented
People are re-naming themselves as people who are already in the user group and entering a classroom ie calling themselves 'John Smith' if they know there is a John Smith in the classroom. The teacher then lets them in. There should be some way of preventing a person entering who is NOT a member of your organisation for all class teams. Have we missed this? Please resolve urgently. Pupils are starting to test the boundaries and the whole process is at risk.
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Andy Birch commented
While this is still an issue, some control of access can be managed in the Admin Centre Meeting Policies.
There is a Participants and guests setting called 'Automatically Admit People' which can be set to allowing 'Everyone in your Organisation' as opposed to just 'Everyone'. -
Barbara Eggleton commented
This is vital for online learning in schools.
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Dan Graveling commented
Or at the very least, make it so that you have a way of identifying the people held in the lobby when you have lobbies configured, through something like an icon or force append something to their name e.g. organisation, guest, and anonymous
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C.Schmidt commented
Massive loophole. Can't imagine this isn't an issue in companies as well!
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Stefanie Lorkowski commented
I agree, in an educational environment the would make life much easier.
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Anonymous commented
This is very much needed to prevent uninvited users from joining confidential meetings.
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Luke Yates commented
Potentially a safeguarding risk; students can access meetings as guests (if allowed in) and we have have several instances of students "hiding" the suffix "(Guest)" so that it's very much harder to spot them! Please disable the "copy join info" button and disallow guest access when a CLASS Teams is set up.
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Adam Fosker commented
This feature needs to be developed ASAP for use in the education sector.
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Jon Martin commented
We would find this feature very, very useful. It is something we have used extensively with Zoom. We used it to "lock" meetings after our clients had "left the meeting" so that we (my staff) could discuss in "Private" w/o having to be concerned with the client re-joining.
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Anonymous commented
Not only this, but also the ability to lock a meeting once all invitees are present (or force latecomers into the lobby).