Firefox: The address wasn't understood

Support Center > Troubleshooting Connection Issues

Published 09/19/2016 at 8:43pm UTC

Page viewed 26079 times


When trying to either enter a session using Firefox, you see an error page: This address was not understood.


Firefox message: this address wasn't understood


Possible Causes

Firefox throws this error when it cannot find the video application to launch, because it is either not installed yet, or has become uninstalled. You will need to install the appropriate video app using the Install button in the lower left hand corner of your dashboard or the waiting room page.



See our installation help articles for instructions for


This article was last reviewed by our Support team on December 26, 2019.