
If the port is not 443, you also need the port number.

Underscores (_) are not supported in server names. Verify that you have the fully qualified domain name (FQDN) of the server that provides access to the remote desktop or published application.If you are outside the corporate network and require a VPN connection to access remote desktops and published applications, verify that the client device is set up to use a VPN connection and turn on that connection.Perform the administrative tasks described in Preparing Connection Server for Horizon Client.For example, you might use mycompany rather than.

Obtain the NETBIOS domain name for logging in.Obtain login credentials, such as a user name and password, RSA SecurID user name and passcode, RADIUS authentication credentials, or smart card personal identification number (PIN).Verify that you have completed the following tasks:
