Edit:
Good morning, you tried to disable the firewall completely in Windows 10 and I still have the same problem. In the domain there are computers that cannot be found by the user. This problem also happens in Windows 7. There are computers in my network that if I see from other computers and those same computers from other computers I don't see them. I don't understand why this is happening. But Firewall is not.
It depends on firewall settings. In Windows 10 this option is blocked as default.