Unity’s Multiplayer Service is the easiest way to set up real-time, networked games for Unity. It’s fast to implement and highly customizable. Unity-provided servers and matchmaking services ensure that your players can easily find and play with each other.
To learn more about how to use the Unity Multiplayer Service, see the Services section of Multiplayer documentation.
Is something described here not working as you expect it to? It might be a Known Issue. Please check with the Issue Tracker at issuetracker.unity3d.com.