No IUserTokenProvider is registered
C#asp.netasp.net Identity-2C# Problem Overview
I recently updated Asp.Net Identity Core
of my application form 1.0 to 2.0.
There are new features which I wanted to try like GenerateEmailConfirmationToken
, etc.
I'm using this project as a reference.
When the user tries to register, I get error during the execution of Post method of Register
private readonly UserManager<ApplicationUser> _userManager;
public ActionResult Register(RegisterViewModel model)
{
if (ModelState.IsValid)
{
var ifUserEXists = _userManager.FindByName(model.EmailId);
if (ifUserEXists == null) return View(model);
var confirmationToken = _userRepository.CreateConfirmationToken();//this is how i'm generating token currently.
var result = _userRepository.CreateUser(model,confirmationToken);
var user = _userManager.FindByName(model.EmailId);
if (result)
{
var code = _userManager.GenerateEmailConfirmationToken(user.Id);//error here
_userRepository.SendEmailConfirmation(model.EmailId, model.FirstName, confirmationToken);
//Information("An email is sent to your email address. Please follow the link to activate your account.");
return View("~/Views/Account/Thank_You_For_Registering.cshtml");
}
}
//Error("Sorry! email address already exists. Please try again with different email id.");
ModelState.AddModelError(string.Empty, Resource.AccountController_Register_Sorry__User_already_exists__please_try_again_);
return View(model);
}
In the line
var code = _userManager.GenerateEmailConfirmationToken(user.Id);
I get error saying:
No IUserTokenProvider is registered.
For now, I just wanted to see what kind of code it generates.
Is there some change I need to make to my ApplicationUser
class that inherits from IdentityUser
class?
Or is there something I need to change to get those function work?
C# Solutions
Solution 1 - C#
You have to specify a UserTokenProvider
to generate a token.
using Microsoft.Owin.Security.DataProtection;
using Microsoft.AspNet.Identity.Owin;
// ...
var provider = new DpapiDataProtectionProvider("SampleAppName");
var userManager = new UserManager<ApplicationUser>(new UserStore<ApplicationUser>());
userManager.UserTokenProvider = new DataProtectorTokenProvider<ApplicationUser>(
provider.Create("SampleTokenName"));
You should also read this article: Adding Two Factor Authentication to an Application Using ASP.NET Identity.
Solution 2 - C#
In ASP.NET Core it's nowadays possible to configure a default service in the Startup.cs like this:
services.AddIdentity<ApplicationUser, IdentityRole>()
.AddDefaultTokenProviders();
There is no need to call the DpapiDataProtectionProvider
or anything like that. The DefaultTokenProviders() will take care of the call to GenerateEmailConfirmationToken from the UserManager.
Solution 3 - C#
In addition to the accepted answer, I'd like to add that this approach will not work in Azure Web-Sites, you'd get CryptographicException instead of a token.
To get it fixed for Azure, implement your own IDataProtector: see this answer
Slightly more detail in blog-post
Solution 4 - C#
My solution :
var provider = new DpapiDataProtectionProvider("YourAppName");
UserManager.UserTokenProvider = new DataProtectorTokenProvider<User, string>(provider.Create("UserToken"))
as IUserTokenProvider<User, string>;
My problem with this code solved.
Good luck friends.
Solution 5 - C#
In case anyone else makes the same mistake that I did. I tried to make a function like the one below and sure enough the error "No IUserTokenProvider is registered." was gone. However as soon as I tried to use the link generated from "callbackUrl" I got the error "Invalid token." In order for it to work you need to get the HttpContext UserManager. If you are using a standard ASP.NET MVC 5 application with individual user accounts you can do it like below..
Code that works:
public ActionResult Index()
{
//Code to create ResetPassword URL
var userManager = HttpContext.GetOwinContext().GetUserManager<ApplicationUserManager>();
var user = userManager.FindByName("[email protected]");
string code = userManager.GeneratePasswordResetToken(user.Id);
var callbackUrl = Url.Action("ResetPassword", "Account", new { userId = user.Id, code = code }, protocol: Request.Url.Scheme);
return View();
}
First try that does not work, No IUserTokenProvider is registered.
is gone but the URL created gets Invalid token.
.
public ActionResult NotWorkingCode()
{
//DOES NOT WORK - When used the error "Invalid token." will always trigger.
var provider = new DpapiDataProtectionProvider("ApplicationName");
var userManager = new ApplicationUserManager(new UserStore<ApplicationUser>(new ApplicationDbContext()));
userManager.UserTokenProvider = new DataProtectorTokenProvider<ApplicationUser>(provider.Create("ASP.NET Identity"));
var user = userManager.FindByName("[email protected]");
string code = userManager.GeneratePasswordResetToken(user.Id);
var callbackUrl = Url.Action("ResetPassword", "Account", new { userId = user.Id, code = code }, protocol: Request.Url.Scheme);
//DOES NOT WORK - When used the error "Invalid token." will always trigger.
return View();
}
Solution 6 - C#
As per pisker above
In startup.cs you can use
services.AddIdentity<ApplicationUser, IdentityRole>()
.AddDefaultTokenProviders();
In .net core 2.0 you may need to add to the startup.cs:
using Microsoft.AspNetCore.Identity;
This worked fine for me.
Solution 7 - C#
While modifying .NET Core's Identity files, I stumbled upon this error:
> NotSupportedException: No IUserTwoFactorTokenProvider
The
> Microsoft.AspNetCore.Identity.UserManager
function couldn't generate a token because no provider was available upon registering a new user. This error has an easy fix though!
If you're like me, you changed AddDefaultIdentity
in the Startup.cs
file to AddIdentity
. I wanted to implement my own user that inherited from the base user. By doing this I lost the default token providers. The fix was to add them back with AddDefaultTokenProviders()
.
services.AddIdentity<User, UserRole>()
.AddEntityFrameworkStores<ApplicationDbContext>()
.AddDefaultTokenProviders();
After that fix, everything worked again!
Solution 8 - C#
I got the same error after updating Identity, and found that it was because I was using Unity.
See this question thread on the solution: https://stackoverflow.com/questions/24731426/register-iauthenticationmanager-with-unity
Also below for quick reference:
> Here is what I did to make Unity play nice with ASP.NET Identity 2.0:
> I added the following to the RegisterTypes
method in the UnityConfig
class:
> container.RegisterType
Solution 9 - C#
You may also be intrested in looking here:
[How to implement a TokenProvider in ASP.NET Identity 1.1 nightly build?][1]
to use the default token provider implementation from Microsoft.Identity.Owin package
[1]: https://stackoverflow.com/questions/19539579/how-to-implement-a-tokenprovider-in-asp-net-identity-1-1-nightly-build "How to implement a TokenProvider in ASP.NET Identity 1.1 nightly build?"
Solution 10 - C#
in IdentityConfig.cs, Add your twofactor option:
manager.RegisterTwoFactorProvider("PhoneCode", new PhoneNumberTokenProvider<ApplicationUser>
{
MessageFormat = "Your security code is {0}"
});
manager.RegisterTwoFactorProvider("EmailCode", new EmailTokenProvider<ApplicationUser>
{
Subject = "Security Code",
BodyFormat = "Your security code is {0}"
});
//config sms service
manager.SmsService = new Services.SMS();
var dataProtectionProvider = options.DataProtectionProvider;
if (dataProtectionProvider != null)
{
manager.UserTokenProvider = new DataProtectorTokenProvider<ApplicationUser>(dataProtectionProvider.Create("ASP.NET Identity"));
}
Solution 11 - C#
It can also be useful for ASP.NET Framework (with simple sync task):
using Microsoft.Owin.Security.DataProtection;
using Microsoft.Owin.Security;
using Microsoft.AspNet.Identity.Owin;
using Microsoft.AspNet.Identity;
using Microsoft.AspNet.Identity.EntityFramework;
...
var userStore = new UserStore<IdentityUser>();
var userManager = new UserManager<IdentityUser>(userStore);
var user = userManager.FindByName(MyUserNameTextBox.Text);
var provider = new DpapiDataProtectionProvider(System.Web.Hosting.HostingEnvironment.ApplicationHost.GetSiteName());
userManager.UserTokenProvider = (IUserTokenProvider<IdentityUser, string>)(new DataProtectorTokenProvider<IdentityUser, string>(provider.Create("UserToken")) as IUserTokenProvider<IdentityUser, string>);
var token = userManager.GeneratePasswordResetToken(user.Id);
var result = userManager.ResetPassword(user.Id, token, MyPasswordTextBox.Text);