Why am I hitting "Error 12007"?
Error 12007 means that the server name or address could not be resolved. If you hit this error while starting or joining a session, it is usually caused by the network security.
Check your firewall allowlist
If you or your company uses firewall allowlist to restrict network access to only specific websites or software, check our article to ensure there is no missing allowlisting and that your service can connect.
Install via MSI or DMG
Domain admins can install GoToWebinar via MSI or DMG and run the app as an admin to ensure proper clearance.