I have tcpip problem

hello, i have two pc in a local network. Each pc has an IP adress... the first pc is under windows 7 (matlab 2014b) and the last is under windows 10 (matlab 16a). I try to establish a tcpip connection between a pc(windows 7) server and a pc(windows 10). but the connection does not work Is this problem related between windows 10 and windows 7 or between matlab 2014b and matlab 2016a? two days ago, I tried a connection between two pc under windows 7 with the same matlab version R2014b and the connection was ok...

I don't understand...

matlab code %% code on the server (192.168.1.5) t = tcpip('192.168.1.3',80);

%% code on the client (192.168.1.3) t=tcpip('192.168.1.5',80,'NetworkRole',server);