Why am I generating the error, No IUserTokenProvider is registered?

Question

I am attempting to allow password reset for my users and I cannot figure out why code and callbackUrl are returning false. Here is my forgot password method:

[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> ForgotPassword(ForgotPasswordViewModel model)
{
    if (ModelState.IsValid)
    {
        var user = await UserManager.FindByNameAsync(model.Email);
        if (user == null || !(await UserManager.IsEmailConfirmedAsync(user.Id)))
        {
            // Don't reveal that the user does not exist or is not confirmed
            return View("ForgotPasswordConfirmation");
        }

        // For more information on how to enable account confirmation and password reset please visit http://go.microsoft.com/fwlink/?LinkID=320771
        // Send an email with this link
        string callbackUrl = await ResetPasswordConfirmationTokenAsync(user.Id, "Password Reset"); 
        return RedirectToAction("ForgotPasswordConfirmation", "Account");
    }

    // If we got this far, something failed, redisplay form
    return View(model);
}

see breakpoint info

then I create the password reset task

private async Task<string> ResetPasswordConfirmationTokenAsync(string userID, string subject)
{
    // For more information on how to enable account confirmation and password reset please visit http://go.microsoft.com/fwlink/?LinkID=320771
    // Send an email with this link:
    string code = await UserManager.GeneratePasswordResetTokenAsync(userID);
    var callbackUrl = Url.Action("ForgotPassword", "Account", new { userId = userID, code = code }, protocol: Request.Url.Scheme); 
    await UserManager.SendEmailAsync(userID, subject, "Please confirm your account by <a href=\"" + callbackUrl + "\">clicking here</a>");


    return callbackUrl;
}

see breakpoint info for this

Since both values return null it generates the error No IUserTokenProvider is registered. Why is this happening when user is not null?

Answer 1

I had this exact same issue. If you have not already created a email service class you need to do so, then you need to reconfigure your identity class. I suggest you use something like this:

public async Task SendAsync(IdentityMessage message)
{
    MailMessage email = new MailMessage(new 
    MailAddress("youremailadress@domain.com", "(any subject here)"),
    new MailAddress(message.Destination));
    email.Subject = message.Subject;
    email.Body = message.Body;

    email.IsBodyHtml = true;

    GmailEmailService mailClient = new GmailEmailService();
    await mailClient.SendMailAsync(email);
}

Next, add your credentials to the webconfig

<appSettings>
     <add key="webpages:Version" value="3.0.0.0" />
     <add key="webpages:Enabled" value="false" />
     <add key="ClientValidationEnabled" value="true" />
     <add key="UnobtrusiveJavaScriptEnabled" value="true" />

     <add key="GmailUserName" value="youremail@yourdomain.com"/>
     <add key="GmailPassword" value="yourPassword"/>
     <add key="GmailHost" value="yourServer"/>
     <add key="GmailPort" value="yourPort"/>
     <add key="GmailSsl" value="chooseTrueOrFalse"/>    
</appSettings>

Finally there are several changes you need to add to your account controller. Please see below:

---

1. Create a new folder called MyClasses and create and add the following class

   public class GmailEmailService:SmtpClient
   {
       // Gmail user-name
       public string UserName { get; set; }
   
   public GmailEmailService() :
       base(ConfigurationManager.AppSettings["GmailHost"], Int32.Parse(ConfigurationManager.AppSettings["GmailPort"]))
   {
       //Get values from web.config file:
       this.UserName = ConfigurationManager.AppSettings["GmailUserName"];
       this.EnableSsl = Boolean.Parse(ConfigurationManager.AppSettings["GmailSsl"]);
       this.UseDefaultCredentials = false;
       this.Credentials = new System.Net.NetworkCredential(this.UserName, ConfigurationManager.AppSettings["GmailPassword"]);
   }
   
   
   }

2. Configure your Identity Class

   public async Task SendAsync(IdentityMessage message)
   {
       MailMessage email = new MailMessage(new MailAddress("youremailadress@domain.com", "(any subject here)"),
       new MailAddress(message.Destination));
       email.Subject = message.Subject;
       email.Body = message.Body;
   
   email.IsBodyHtml = true;
   
   GmailEmailService mailClient = new GmailEmailService();
   await mailClient.SendMailAsync(email);
   
   
   }

3. Add your credentials to the web.config. I did not use gmail in this portion because the use of gmail is blocked in my workplace and it still works perfectly.

   <add key="GmailUserName" value="youremail@yourdomain.com"/>
   <add key="GmailPassword" value="yourPassword"/>
   <add key="GmailHost" value="yourServer"/>
   <add key="GmailPort" value="yourPort"/>
   <add key="GmailSsl" value="chooseTrueOrFalse"/>
   <!--Smptp Server (confirmations emails)-->
   

4. Make necessary changes to your Account Controller. Add the following highlighted code.

Compile then run. Cheers!