Windows 10 Professionl - Non Domain User -Navision 2016 client access

Hi,

One of my director using Windows 10 professional, Not enrolled into our Domain. He would like to access Nav on his pc.

I have installed Nav 2016 on his pc and try to run as diff User, but it didn't work.

Any suggestion how to access Nav for a non-domain user ( Apart from RDP, Web Client ).