Make sure you are running the minimum system requirements to launch and participate in activities and breakouts.

When an activity with breakouts is launched, desktop app attendees who do not have Google Chrome installed will see a message directing them to install it in order to join. They will also see a Join URL that they can copy/paste into the Chrome browser to automatically be launched into session.

* If mobile attendees wish to collaborate on a Google Drive file or a file on any other file sharing application (rather than view only), they must use the corresponding app (e.g., Google app) to do so.