ASP.NET Identity Session Timeout

Question

I use ASP.NET Identity .. I want to set session timeout to unlimited or max value. I've tried something but it doesn't effect. Note: I use shared hosting. Thank you.

//web.config
<system.web>
<customErrors mode="Off" />
<httpRuntime targetFramework="4.5" />
<authentication mode="Forms" />
<sessionState timeout="500000" />
</system.web>

//asp.identiyt config 
public void ConfigureAuth(IAppBuilder app)
{
    app.UseCookieAuthentication(new CookieAuthenticationOptions
    {
        AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
        ExpireTimeSpan = TimeSpan.FromDays(365),
        LoginPath = new PathString("/user/login"),
        Provider = new CookieAuthenticationProvider
        {
            OnValidateIdentity = SecurityStampValidator.OnValidateIdentity<ApplicationUserManager, ApplicationUser, int>
                (
                     validateInterval: TimeSpan.FromDays(365),
                     regenerateIdentityCallback: (manager, user) => user.GenerateUserIdentityAsync(manager),
                     getUserIdCallback: (id) => (Int32.Parse(id.GetUserId()))
                )
        }
    });
}

Answer 1

public void ConfigureAuth(IAppBuilder app)
{            
    var sessionTimeout = 20; // 

    app.UseCookieAuthentication(new CookieAuthenticationOptions
    {
        ExpireTimeSpan = TimeSpan.FromSeconds(30),
    });
}