no remote computers detect

Would it effect both PC's communication with 1 pc and 1 bootcamp(MAC) pc?
i did follow full tutorial( port issue, firewall ) but it still cannot detect the 2nd computer( bootcamp PC). I searched all topic from other user and still have no idea what's going on....please help..

2 days research and try try try. Finally fixed the problem.
- Disable Eset firewall and all work well.
- how dumbass i am...