I have the next problem.
I’m developing a small game that use UDP server for multiplayer.
When I run the game inside Unity Editor is not working.
After many resurches I found that the UPD socket that create the client (the game) has not permision on the firewall.
When I build the game and run it at the same PC works fine and the UPD socket has permision.
Some extra data:
I use Windows 10.
I run Unity as adminstrator.
I have open/pemited the ports (input and output) in the firewall configuration needed for my game.
I have open/permited the conections of Unity.exe in the firewall.
Task Manager screenshot (Spanish Windows it means “not allowed, not restricted”)