Hi,
Thanks in advance.
Server: Skype for Business 2015
Client: Skype for Business 2016
When Client logins, he get a welcome screen with error connection "Sorry, we can't connect right now. Please try again later" and also "skip the quick tips for now and looks at them next time you login".
here is the error screenshot. https://imgur.com/a/DCyYxci
please advice. thank you.