Error - user with the same email

[lihua.zhang]

Hi @BlackStar ,

Welcome to the Auth0 Community!

The following FAQs and article talk about how to implement the account linking feature.

How to Use the Auth0 Account Link Extension to Link Accounts

Problem statement: Auth0 supports the linking of user accounts from various identity providers. This allows users to authenticate from any of their accounts and still be recognized by your app and associated with the same user profile. Auth0 has an easy-to-use extension to help users link accounts. With this extension installed, when users log in to a web application with the same email but a different type of connection, they can choose to link the accounts. Solution: https://auth0.com/docs…

How to Implement Client-Side User Initiated Account Linking

Problem statement: Auth0 supports the linking of user accounts from various identity providers. This allows users to authenticate from any of their accounts and still be recognized by your app and associated with the same user profile. Account linking can be initiated by users. Below is the Client-Side Implementation. Solution: https://auth0.com/docs/manage-users/user-accounts/user-account-linking/user-initiated-account-linking-client-side-implementation Create a SPA and add the http://loca…

Account Linking Using Post-Login Actions

Problem Statement Is it possible to link user accounts using a Post-Login Action? Solution Actions can be used to call the Management API to link user accounts. Auth0 does not automatically change to the correct primary user after Account Linking, so it must be changed within the Actions code upon successful Account Linking with api.authentication.setPrimaryUser(). The process for linking accounts in actions, along with an example can be found here:

User Account Linking

Hopefully, you can find them helpful!