问题
I came across this issue in my app, that azure is letting user register themselves from email and social media (using registered email) both. Thus there are two users with same email Id.
Can you guys help me out in this one? Thank you.
回答1:
As of now in basic policies, it is not possible. But in advanced policies (IEF) you can make a trick by calling an API to check user email existence using Graph APIs and return success or exception.
There is an account linking feature which is in the roadmap and you can vote for that at https://feedback.azure.com/forums/169401-azure-active-directory/suggestions/13214529-azure-ad-b2c-how-to-avoid-validate-duplicate-s
来源：https://stackoverflow.com/questions/50832021/in-azure-b2c-how-to-restrict-user-from-signing-up-in-with-same-email-through-soc