Rhino5.0 error when deploy on client side

Hi
I got error msg when i try to install Rhino 5.0 on the client side, however server side has been installed successfully. after installed and put license server ip address, then click “Test Connectivity”.
error msg: they was a problem communicating with “192.168..” please contact your system administrator for assistance, btw ping test works fine from both sides. any idea?

Cheers