How to create users with same email but with different in custom user attribute in Azure AD B2C? about active-directory-b2c-advanced-policies HOT 5 CLOSED

I had a chat with Microsoft engineers about this issue and they learned me that, unless you go really deep in B2C, hacking away, it's better to use something like IdentityServer for multi-tenant authentication as this czn be freely customized... Just Passing the info

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Hi @athulya-ratheesh ,

I see you closed this issue. We're actually investigating the same, using B2C as a multi-tenant user store, so An email-address could be used in multiple tenants, but should have a different password (they are really different accounts, just same email).

How did you approach this?

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Hi @Mortana89,

We planned like, Sign up of users will be from a common admin page. But the user login will be from different login pages for each project.

Based on the example I have mentioned in the above issue

• project1 will have a dedicated login page like 'login/proj1' and project 2 will have 'login/proj2'.
• Based on the login page they need to be treated as different users, but they may have the same email with different password.
• The field 'Project' can be considered as a custom claim value which we saved on user registration.
• On successful login each user will have a validation check to know whether the user have access to that particular project.

The issue I am facing is that, Azure AD B2C will not allow registration of same email id twice (Except they are from different providers.).

from active-directory-b2c-advanced-policies.

@Mortana89 Sounds good. We are going with other options. Thank you.

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@Mortana89 I have the same issue..I will create a B2C user with one email and more usernames under this mail. The issue is i cannot specify or give different passwords to the users that created under this e-mail. All must sign in with the same password, that is not desirable.
My case is:
User => Alex has 3 different accounts on the same webapp. But he has to use 3 different Username because of 3 different works. And he will use MFA with his mail.
Mail : [email protected]
Username1: alexUsername1
Username2: alexUsername2
Username3: alexUsername3

When they attempt to sign, all usernames must use the same password, which is not solve our problem.

Do you have any suggestion / solution to this?

I hope you can help me guys :)

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