Problem solved, the problem was the licensing, no Webex licence was assigned to my user account for some reason, assigned a licence and signed out and the in and is working now.

In my case the time settings didn't fix the problem, Webex is working fine on mobile (Android) but not on Windows 10, I can make calls but when receiving calls the notification bar doesn't pop up.I have checked all the settings, uninstalled Webex, de...