I'm sorry about the confusion there. A 404 status / error message means you may have a block with from your firewall, and are unable to reach the servers responsible for the download connection.
I would first check that your internet connection is unblocked by a local area firewall. If you get stuck, you can always try to manually install GoToMeeting through the MSI, and then join with an ID through the software: https://support.logmeininc.com/gotomeeting/help/installation-guide-for-msi-windows-g2m080003
Are you able to navigate to other parts of your GoToMeeting account successfully?
Can you open Settings etc?
Would you be able to test using a different web browser?
I apologize for that error message.
If you're on a Mac OS, try this approach:
after installing the latest version of the gotomeeting plugin (from here: https://support.logmeininc.com/gotomeeting/help/download-now-g2m010002), the plugin runs but directly asks for an update.
I agreed to the update, the new version was downloaded and started to install.
Yet the installation runs into the following error:
"The deployment manifest could not be downloaded because a connection to the network could not be established. Ensure that you can connect to the network, and try again."
Yet, when I try to access the URL from the error message directly (https://builds.getgocdn.com/builds/calenderintegration/outlook/G2M/GoToMeetingOutlookCalenderPlugin.... ), the server replies with a 404.
Is it possible, that the latest update installer is broken?
Thanks and cheers
PS: Windows 10, Outlook 2016 (Office 365)
A 404 error message is invariably a local or network block accessing some of our websites. I would reference this document with your security software or IT group to ensure all GoToMeeting IP ranges and URLs are whitelisted: https://support.logmeininc.com/gotomeeting/help/how-do-i-configure-gotomeeting-to-work-with-firewall...