I am logging in for the first time to an existing Dell server running Windows Server 2016. The server has been in production for years and other people supposedly have user Server Administrator. When I open https://:1311 get a "This site can't be reached - refused to connect".

I have restarted the DSM SA services. Windows firewall is turned off.  Have tried it in multiple browsers.

Not sure what else to check. Any ideas?

Thanks

Bob