Attendee join webinar via browser without using GoToOpener installation

Hi all!

Is it still possible to connect via browser-only without any software installation? I have looked at the following:

https://support.goto.com/webinar/help/browser-app

https://community.logmein.com/t5/GoToWebinar-Discussions/Joining-webinar-without-downloading-GoToOpener-app/td-p/219980

I tried a variety of logon routes, but they all appear to take me to the same GoToOpener.exe route:

https://app.goto.com/meeting

https://global.gotowebinar.com/join

https://www.goto.com/webinar/join

https://app.gotomeeting.com

https://meet.goto.com/

We have some restricted / secured clients that are unable to intall any software, so a reliable / repeatable method that I can tell them to use would be useful - if anyone knows a way?

Thanks in advance.

Paul