ABP Auth server with MFA #9956

6 Answer(s)

• 

  -1

  AI-Bot created 21 days ago

  Support Team ABP Agent

  • supportTwoFactor: Indicates whether the user is eligible to use two-factor authentication (2FA) based on their account configuration. This is typically true if the user has at least one valid 2FA provider configured (such as a confirmed email, phone number, or authenticator app). If false, the user cannot use 2FA even if twoFactorEnabled is true.
  • twoFactorEnabled: Indicates whether 2FA is enabled for the user. This means the user has opted in or 2FA has been enforced for their account. However, 2FA will only be enforced if supportTwoFactor is also true.

  If twoFactorEnabled is true but supportTwoFactor is false, the user will not be prompted for 2FA because they do not have a valid 2FA provider configured.

  ---

  MFA Flow with ABP Auth Server:

  1. When a user attempts to log in via /connect/token and 2FA is required, the response will be RequiresTwoFactor.
  2. The client should then prompt the user for the 2FA code (e.g., from SMS, email, or authenticator app).
  3. The client must call the appropriate endpoint to send the code (e.g., /api/account/send-two-factor-code) and then verify it using /api/two-factor-token/verify-two-factor-code.
  4. After successful verification, the client should retry the /connect/token request, including the 2FA code and any required parameters (such as two_factor_token or similar, depending on your ABP version and configuration).

  If you always receive RequiresTwoFactor even after verifying the code, ensure:

  • The correct cookies (such as the two-factor authentication cookie) are sent with the /connect/token request.
  • The user context (including tenant, if using multi-tenancy) is preserved between requests.
  • The 2FA verification endpoint is called successfully and returns a positive result before retrying /connect/token.

  ---

  Recommended Integration Steps:

  1. Attempt login via /connect/token.
  2. If response is RequiresTwoFactor, prompt for 2FA code.
  3. Call /api/account/send-two-factor-code to send the code.
  4. Call /api/two-factor-token/verify-two-factor-code to verify the code.
  5. On success, retry /connect/token with the necessary 2FA parameters and cookies.

  If you are using Angular, ensure your HTTP client is configured to handle cookies and authentication state correctly across these requests.

  ---

  Sources:

  • ABP Identity Two-Factor Authentication
  • ABP Support: User is null when using two-factor login (cookie/multitenancy issue)

  ---

  This response was generated by AI. If it didn’t solve your problem, feel free to post a new answer — our support team will jump in to help you soon.

  Save Cancel
• 

  0

  maliming created 20 days ago

  Support Team Fullstack Developer

  hi

  SupportTwoFactor: Whether the user has an available two-factor authentication method, such as email confirmation, phone number verification, or an authenticator app.

  TwoFactorEnabled: Whether the user has enabled two-factor authentication.

  Thanks

  Save Cancel
• 

  0

  r.abouzid created 16 days ago

  Recommended Integration Steps:

  1. Attempt login via /connect/token.
  2. If response is RequiresTwoFactor, prompt for 2FA code.
  3. Call /api/account/send-two-factor-code to send the code.
  4. Call /api/two-factor-token/verify-two-factor-code to verify the code.
  5. On success, retry /connect/token with the necessary 2FA parameters and cookies.

  on the 5th step, i always get the same reponse,

  {
      "error": "invalid_grant",
      "error_description": "RequiresTwoFactor",
      "error_uri": "https://documentation.openiddict.com/errors/ID2024",
      "userId": "64bd036e40dfb566c9663a1cac555ef0",
      "twoFactorToken": "CfDJ8OjtbOcGOuhPj+12OyiWV3SXN7Fyxkz++4yTtXvf1kghPvK1jWBjBlBAi4eJlLYr/hoL7LjhxYuf7A6JE0ZCycrCq7p+Uum/nrfCg1FSrKCgtEvAm2giNaxMXgC2lVwAfFStjyTvFnUphTpOKTlyFy0zFIYTE5w7p1Qn5l5c37ApBnPMJIOEkGitR0c71W/h42NOBDkbkslm8LD4uYPplW64OS2+kv1qX6ztA05N+XguZGEw+w+ZZJ0DgmPp0jXfug=="
  }
  

  Could you please clarify what specific parameters need to be included in the /connect/token request after a successful two-factor verification?

  here are the details of the user :

      "tenantId": null,
      "userName": "anass02",
      "email": "usermail@gmail.com",
      "name": "anass",
      "surname": "ar",
      "emailConfirmed": true,
      "phoneNumber": "212XXXXXXXXX",
      "phoneNumberConfirmed": true,
      "supportTwoFactor": false,
      "twoFactorEnabled": true,
      "isActive": true,
      "lockoutEnabled": true,
      "isLockedOut": false,
      "lockoutEnd": null,
      "shouldChangePasswordOnNextLogin": false,
      "concurrencyStamp": "ebfb2a9518da4b25a78e77f312dc7eec",
      "roleNames": null,
      "accessFailedCount": 0,
      "lastPasswordChangeTime": "2025-09-30T10:26:11.4619998+00:00",
      "isExternal": false,
      "isDeleted": false,
      "deleterId": null,
      "deletionTime": null,
      "lastModificationTime": "2025-10-06T10:24:23.5644194",
      "lastModifierId": "f83f436c-cc3f-2f6b-8b58-3a1ca8a0e780",
      "creationTime": "2025-09-30T11:26:11.5069088",
      "creatorId": "f83f436c-cc3f-2f6b-8b58-3a1ca8a0e780",
      "id": "64bd036e-40df-b566-c966-3a1cac555ef0",
      "extraProperties": {}
  }
  

  as you can see emailConfirmed is true, supportTwoFactor false, twoFactorEnabled true.

  Save Cancel
• 

  0

  maliming created 15 days ago

  Support Team Fullstack Developer

  hi

  Do you want to validate the 2FA in the /connect/token endpoint?

  You can try to use the Resource Owner Password Flow in Angular, and check the http request and response

  https://abp.io/docs/latest/framework/ui/angular/authorization#resource-owner-password-flow

  Thanks.

  Save Cancel
• 

  0

  r.abouzid created 15 days ago

  Hi,

  To clarify, this issue is not related to the Angular client, it’s happening directly at the API level. After the /api/two-factor-token/verify-two-factor-code endpoint succeeds, I’m trying to understand how to correctly complete the 2FA flow with the /connect/token endpoint.

  Thanks.

  Save Cancel
• 

  0

  maliming created 14 days ago

  Support Team Fullstack Developer

  hi

  1. call connect/token and it returns RequiresTwoFactor

  {
    "error": "invalid_grant",
    "error_description": "RequiresTwoFactor",
    "error_uri": "https://documentation.openiddict.com/errors/ID2024",
    "userId": "863f6537b288a6b5cad13a1cd3a98b12",
    "twoFactorToken": "CfDJ8EJYyIM2bE5Jn1B5p="
  }
  

  2. Send the 2FA code by calling /api/account/send-two-factor-code

  {
      "token": "CfDJ8EJYyIM2bE5Jn1B5p=",
      "userid": "863f6537b288a6b5cad13a1cd3a98b12",
      "provider": "Email"
  }
  

  3. Get the code from your email inbox.

  <html lang="en" xmlns="http://www.w3.org/1999/xhtml">
  <head>
      <meta charset="utf-8" />
  </head>
  <body>
      <h3>Two-factor Code</h3>
  
      <p>Your Two-factor code is: 727212</p>
  
  </body>
  </html>
  

  5, Use the code call connect./token again.

  curl --location 'https://localhost:44315/connect/token' \
  --header 'Content-Type: application/x-www-form-urlencoded' \
  --data-urlencode 'grant_type=password' \
  --data-urlencode 'scope=offline_access AbpSolution1' \
  --data-urlencode 'client_id=AbpSolution1_App' \
  --data-urlencode 'username=admin' \
  --data-urlencode 'password=1q2w3E*' \
  --data-urlencode 'TwoFactorProvider=Email' \
  --data-urlencode 'TwoFactorCode=727212'
  

  

  Save Cancel