GoTo Webinar detects the best join method for attendees based on their operating system, browser, and the organizer's webinar type. Attendees will be prompted to join from the browser in these instances.

• Attendees are running a system incompatible with the desktop app (Linux, Google Chrome OS, or Mac OS X 10.8 Mountain Lion or older).
• Attendees use the workaround provided to launch the browser.
• Organizers are hosting a browser-only Webcast webinar.