Why do I see an "invalid meeting ID" error message?
If you are trying to join a session and encounter "The meeting ID is invalid" message, it means that the meeting ID you entered does not match with the session you are trying to join because it is incorrect, was mistyped, or the meeting ID has expired.
You might have entered it wrong.
First, try re-entering the 9-digit GoToMeeting ID to see if you might have made a typo.
You might have the wrong meeting ID.
It's possible that the GoToMeeting ID you have is incorrect. Try contacting the organizer who invited you to the meeting and asking for the correct GoToMeeting ID.
The meeting might be expired.
The meeting ID might be from a past GoToMeeting that already expired. Try contacting the organizer who invited you to the GoToMeeting and asking if there is an updated session you can attend.