Lock a meeting in Microsoft Teams
In a Teams meeting, meeting organizers and co-organizers can choose to lock their meetings to prevent subsequent join attempts. Anyone attempting to join a locked meeting from any device will be informed that the meeting is locked.
When a meeting is locked, no one else will be able to join, but invitees can still access the meeting chat, the recording, and other meeting info.
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After joining the meeting, select People .
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In the Participants pane, select More actions > Lock the meeting > Lock.
To unlock the meeting:
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Select People .
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In the Participants pane, select More actions > Unlock the meeting > Unlock.
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After joining the meeting, select More actions > Lock the meeting (or Unlock the meeting when locked).
When a meeting is locked, no additional participants can join, but invitees can still access the meeting chat, recording, and other meeting info.
Note: After participants leave the meeting, they cannot join again until the meeting is unlocked.