Connection Failed - iCloud Calendar

Im running version 7.2.38732.0

Trying to set up the Calendar to show my iCloud Calendar. I’m pretty sure I’m doing everything right and using the icloud app generated password, but all I’m getting is Connection Failed.

The Caldav address in the em client account settings is showing as:
https://caldav.icloud.com/.well-known/caldav

No idea what is wrong, any ideas?

Mine works using just https://caldav.icloud.com/ in the Caldav URL box.

Thanks for the suggestion, tried it, but made no difference.