Once you successfully download the desktop software, the GoToMeeting Sign In window will launch from the system tray.Follow the browser prompts as instructed, or see step-by-step instructions for Windows and Mac. The GoTo Opener “helper” app will launch in your default browser and ask your permission to install itself and the GoToWebinar software.See our system requirements to make sure you are running a supported operating system, or check your system's compatibility automatically.