I enountered the same issue. I upgraded to 10.3 version and it works for a day. After that it downgrade back to 8.45 version.
How can I resolve this issue?
@cyoonfui You will have to join with the Organizer's GoToMeeting software version every time, though that one (V8.45) should be retired very soon (if not already).
Thanks for your update. I have installed the latest version previous and it has been downgrade to 8.45 again.
I just got another installer for 10.3.0 and will try it again.