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