Azure B2C enable SSO with multiple apps using a Custom OpenID

Ghina 0

Hi,

I have been wanting so help to find out why SSO is not enabled on Azure B2C in the scenario above:

I have those application setup:

Application A uses Custom Policy -> Protocol SAML

Application B uses User Flows

All under the same Tenant

The user can sign up through multiple ways such as Google, and through a custom OpenID which linked to an institution App registration.

I already have implemented the below:

<SingleSignOn Scope="Tenant"> on custom policy

SSO Configuration= Tenant on user flows

Scenario that is happening: When the user signs-up using (custom IDP/social IDP) in Application A. Then when the user goes to Application B the user is prompted to sign up again instead of signing in.

Appreciate if you have any insight on this, we have API calls on user signup so it is causing issues because of the duplicates.

James Hamil 25,866 Reputation points Microsoft Employee

2024-10-18T00:22:13.38+00:00

Hi @Ghina , can you check if the session cookie is being shared across the applications? The session cookie should be set to a domain that is common to both applications to ensure that the user's session is maintained.
Ghina 0 Reputation points

2024-10-28T06:23:10.3966667+00:00

Hi,

Thank you for your response, but can you please elaborate I have tried to look at the documentation https://learn.microsoft.com/en-us/azure/active-directory-b2c/session-behavior?pivots=b2c-custom-policy but I didn't quite catch what you mean.

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Azure B2C enable SSO with multiple apps using a Custom OpenID

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