Prevent meeting attendees from joining a meeting after it has ended

[Lazeng]

Good day, 

We are experiencing issues with students joining meetings long after they have ended, this creates unnecessary clutter and generation of multiple attendance registers, we have in most meeting more than 100 students, and would like to find out if there's a way we can prevent all students from joining the meeting after it has ended.

[#2]

There are several ways to manage this, Microsoft has even introduced a new feature as how access to a meeting chat will be depending on how they were invited. So just look in the meeting options for how the chat settings should be and have a look at the invitation info.

A participants access to meeting chat will be dependent on how they were invited to the meeting

Who can see the chat for a single meeting?

-People who are invited to the meeting or forwarded the meeting invitation after it is scheduled have access to the chat before, during, and after the meeting (up to the 1000-person limit).
-People who are added to a meeting after it starts using the Invite someone field on the Participants pane (or are provided the meeting join coordinates in another way) will have access to the chat from the time they join to the time the meeting ends. They will not be able to see chat that takes place after the meeting ends.

Who can see the meeting chat for a recurring meeting series?

-People who are invited to the full series have access to the chat before, during, and after the meeting (up to the 1000-person limit).
-People who are forwarded the invite of a single occurrence of the series or added to a meeting after it starts using the Invite someone field on the Participants pane (or are provided the meeting coordinates in another way) have access to the chat from the time they join to the time that meeting instance ends. They will not be able to see chat that takes place after the meeting ends.

Note: These changes do not impact channel meetings.

This can be a good reading too!
https://support.microsoft.com/en-us/topic/keeping-students-safe-while-using-teams-for-distance-learn...

[#3]

@ChristianJBergstrom Although old, this answer is totally off topic.  At least you ought to have read the question prior to searching and pasting the first solution suggested by search engines or the not so mature AI responses.