Server looses control over possessed character when client connected to the server, What's the reason for that?

I’am developing a LAN multiplayer game following Epic’s multiplayer tutorial series (Blueprint Multiplayer: Project Overview | 01 | v4.11 Tutorial Series | Unreal Engine - YouTube). It’s perfectly working until creating server and joining to lobby and server’s character is also getting spawned and that character can be controlled by the server. But after client joins the server, the control over server’s character passed to client’s character which makes client character movable/playable. When that happens server’s character will loose control and that character is cannot be playable/movable anymore. Can anyone help me with this matter. A BIG help!

Solved! I had to select Disable Auto Possession from my character BP Posses options