This time I resort to you because I tried to send a message to another PC that "supposedly" is in my network but when I open the cmd and execute this command: "msg naofan Hello" he replies that neohan does not exist or is not connected.
The strange thing is that if I go to network or to my PC I can see it in groups at home or in a network and I can even access its files (to which he allows me to access).
Another thing is that in cmd if I run: "net view" Only my PC appears and nothing else.
I think that the other PC is not well added to the network, but I do not know how to do it, it already comes out of my limited computational knowledge.
Both PCs have W10 Ultimate.
Let's see if someone can help me.
I found this guide: https://techindroid.com/intra-office-messaging-system-using-realpopup/