Question 225087 in ASP.NET Question posted in
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Asp.net – Response status code does not indicate success: 404 (Not Found) with owin library

I am trying to implement the Azure AD authentication on my ASP.NET MVC application (framework version 4.7.2).

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All the required config values lie on the web.config file.

enter image description here

AccountController.cs

public class AccountController : Controller
{
    // GET: Account
    public ActionResult Index()
    {
        return View();
    }

    public void SignIn()
    {
        if (!Request.IsAuthenticated)
        {
            HttpContext.GetOwinContext().Authentication.Challenge(
                new AuthenticationProperties { RedirectUri = "/Default" },
                OpenIdConnectAuthenticationDefaults.AuthenticationType
            );
        }
    }

    public void SignOut()
    {

        HttpContext.GetOwinContext().Authentication.SignOut(
          OpenIdConnectAuthenticationDefaults.AuthenticationType,
          CookieAuthenticationDefaults.AuthenticationType
        );
    }
}

RouteConfig.cs

public class RouteConfig
{
    public static void RegisterRoutes(RouteCollection routes)
    {
        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

        routes.MapRoute(
            name: "Default",
            url: "{controller}/{action}/{id}",
            defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
        );
    }
}

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When I try to invoke the SignIn method it always shows an error, like the below image.

enter image description here

Tags:

2

Answers


  1. 0

    I know this won’t be an "answer" as it is, but I would be helpful to shed some light of how and what’s happening (find where is it failing).

    In order to debug your behaviour, I would suggest to change the void for a string and print something inside the if statement and something else out; something like this:

    public string SignIn()
{
    if (!Request.IsAuthenticated)
    {
        //HttpContext.GetOwinContext().Authentication.Challenge(
        //    new AuthenticationProperties { RedirectUri = "/Default" },
        //    OpenIdConnectAuthenticationDefaults.AuthenticationType
        //);
        return "Not Authenticated"
    }
    return "Authenticated"
}

    From there, you can see if it’s not finding the SignIn endpoint or the redirection path on /Default that redirects to /Home/Index/

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  2. 0

    The error occurred as you missed adding {0} to the AADInstance key in your Web.config file.

    I followed this blog by @ayoub to implement the Azure AD authentication in my .NET MVC application (framework 4.7.2).

    When I click Sign In button without adding {0} to the AADInstance key in Web.config file, I too got same error:

    <appSettings>
    <add key="ida:ClientId" value="appID" />  
    <add key="ida:Tenant" value="xxxxxxxx.onmicrosoft.com" />  
    <add key="ida:AADInstance" value="https://login.microsoftonline.com/" />  
    <add key="ida:PostLogoutRedirectUri" value="https://localhost:44353/" />
</appSettings>

    Response:

    enter image description here

    To resolve the error, make sure to add {0} at the end of your AADInstance key value by modifying Web.config file:

    <appSettings>
    <add key="ida:ClientId" value="appID" />  
    <add key="ida:Tenant" value="xxxxxxxx.onmicrosoft.com" />  
    <add key="ida:AADInstance" value="https://login.microsoftonline.com/{0}" />  
    <add key="ida:PostLogoutRedirectUri" value="https://localhost:44353/" />
</appSettings>

    Now, I ran the project again by making above change and got below screen with Sign In button:

    enter image description here

    When I clicked Sign in button, I got below screen to pick Azure AD account:

    enter image description here

    Once sign in successful, it took me to /Home/Index page:

    enter image description here

    Reference:
    asp.net mvc – Azure AD Signin from MVC: Response status code does not indicate success: 404 (Not Found) by AxleWack

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