Please make sure to have at least Dante Controller 4.13 version (we recommend having the latest Dante Controller version) installed and that you have a working Internet connection.
The easiest way to do this is to log into Dante Director, choose a Site then click ‘Open Dante Controller’ in the top right.
You may also be running into a port/firewall issue. See 'I can’t access Dante Director using Dante Controller.'