I've set up the following in Startup.Auth.cs:
public partial class Startup { public void ConfigureAuth(IAppBuilder app) { // Enable the Application Sign In Cookie. app.UseCookieAuthentication(new CookieAuthenticationOptions { AuthenticationType = "Application", AuthenticationMode = AuthenticationMode.Active, LoginPath = new PathString("/Login"), LogoutPath = new PathString("/Logout"), }); // Enable the External Sign In Cookie. app.SetDefaultSignInAsAuthenticationType("External"); app.UseCookieAuthentication(new CookieAuthenticationOptions { AuthenticationType = "External", AuthenticationMode = AuthenticationMode.Passive, CookieName = ...

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