Facebook login returns Failure in ASP.NET MVC

I am trying to implement FaceBook login in my ASP.NET MVC app. Everytime it tries to run SignInManager.ExternalSignInAsync(loginInfo, isPersistent: false), it returns Failure Here's the code- Startup.Auth.cs app.UseFacebookAuthentication( appId: Social_NetworkBLL.FaceBook_AppID, appSecret: Social_NetworkBLL.FaceBook_SecretID ); AccountController [HttpPost] [AllowAnonymous] [ValidateAntiForgeryToken] public ActionResult ExternalLogin(string provider, string returnUrl) { // Request a redirect to the external login provider return new ChallengeResult(provider, Url.Action("ExternalLoginCallback", "Account", new { ReturnUrl = returnUrl })); } [AllowAnonymous] public async Task<ActionResult> ExternalLoginCallback(string returnUrl) { var loginInfo = await AuthenticationManager.GetExternalLoginInfoAsync(); if (loginInfo == null) { return RedirectToAction("Login"); } // Sign in the user with this external login provider if the user already has a login var result = await SignInManager.ExternalSignInAsync(loginInfo, isPersistent: false); switch (result) { case SignInStatus.Success: return RedirectToLocal(returnUrl); case SignInStatus.LockedOut: return View("Lockout"); case SignInStatus.RequiresVerification: return RedirectToAction("SendCode", new { ReturnUrl = returnUrl, RememberMe = false }); case SignInStatus.Failure: return RedirectToAction("Login"); default: // If the user does not have an account, then prompt the user to create an account ViewBag.ReturnUrl = returnUrl; ViewBag.LoginProvider = loginInfo.Login.LoginProvider; //return View("ExternalLoginConfirmation", new ExternalLoginConfirmationViewModel { Email = loginInfo.Email }); ExternalLoginConfirmationViewModel vm = new ExternalLoginConfirmationViewModel { Email = loginInfo.Email }; //return RedirectToAction("ExternalLoginConfirmation", new { model = vm, returnUrl = returnUrl }); return await ExternalLoginConfirmation(vm, returnUrl); } } FB App Settings

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SignInStatus.Failure indicates whether the user is already registered on your site or not. The default ASP.NET MVC Account Controller's ExernalLoginCallBack looks like this. // // GET: /Account/ExternalLoginCallback [AllowAnonymous] public async Task<ActionResult> ExternalLoginCallback(string returnUrl) { var loginInfo = await AuthenticationManager.GetExternalLoginInfoAsync(); if (loginInfo == null) { return RedirectToAction("Login"); } // Sign in the user with this external login provider if the user already has a login var result = await SignInManager.ExternalSignInAsync(loginInfo, isPersistent: false); switch (result) { case SignInStatus.Success: return RedirectToLocal(returnUrl); case SignInStatus.LockedOut: return View("Lockout"); case SignInStatus.RequiresVerification: return RedirectToAction("SendCode", new { ReturnUrl = returnUrl, RememberMe = false }); case SignInStatus.Failure: default: // If the user does not have an account, then prompt the user to create an account ViewBag.ReturnUrl = returnUrl; ViewBag.LoginProvider = loginInfo.Login.LoginProvider; return View("ExternalLoginConfirmation", new ExternalLoginConfirmationViewModel { Email = loginInfo.Email }); } } In you code above, you are redirecting to the Login Page on Case SignInStatus.Failure. Remove the RedirectToAction("Login");