Azure B2C with Facebook provider

Question

I try to connect my azure B2C to Facebook login. I read this https://docs.microsoft.com/en-us/azure/active-directory-b2c/active-directory-b2c-setup-fb-app

But I still receive this error when Azure transfer me to Facebook:

Blocked URL: This redirection failed because the redirection URI is not allowed in the OAuth client settings of the application. Make sure OAuth client and web credentials are enabled and add all domains in your app as valid OAuth Redirect URLs.

I try to add several URI under Facebook -> Product -> Login -> Settings -> Valid OAuth Redirect URIs. I try this:

https://b2ctenant.b2clogin.com/b2ctenant.onmicrosoft.com/oauth2/authresp https://login.microsoftonline.com/b2ctenant.onmicrosoft.com/oauth2/authresp https://sitename.azurewebsites.net/.auth/login/facebook/calklback https://sitename.azurewebsite.net

I am out of idea...

Answer 1

You can use the following domains with Azure AD B2C:

1. your-tenant-name.b2clogin.com (recommended)
2. login.microsoftonline.com

If you're using the your-tenant-name.b2clogin.com domain with Azure AD B2C, then the redirection URL that is registered for Azure AD B2C in Facebook must be set to:

https://your-tenant-name.b2clogin.com/your-tenant-name.onmicrosoft.com/oauth2/authresp

If you're using the login.microsoftonline.com domain with Azure AD B2C, then the redirection URL that is registered for Azure AD B2C in Facebook must be set to:

https://login.microsoftonline.com/te/your-tenant-name.onmicrosoft.com/oauth2/authresp

(Note the /te path in the redirection URL.)