Do you require a license for CC Viewer

In the past I could download the CC Viewer and install it locally on a number of my clients computers to view 3D models.  Now under Connect services it seems that I have to connect to the hosted server and validate a license to run the viewer.  Is this correct and if so why the change? How can I provide 3mx models to third party clients for viewing.  I realize that I can publish web models but many of my clients do not have reliable internet access

Farouk Rohoman