How to create Session Id for every Login in Asp.net MVC?

Try this when you abandon session/Logout:

Session.Abandon();
Response.Cookies.Add(new HttpCookie("ASP.NET_SessionId", ""));

By clearing out that cookie, a new session with a new session ID will be created after second login.

I got better solution to create new session id like

SessionIDManager manager = new SessionIDManager();
string newSessionId =  manager.CreateSessionID(HttpContext.Current);

above code helped me.