A cloud-based identity and access management service for securing user authentication and resource access
Hi @Govinda L
Thank you for posting this in Microsoft Q&A.
I understand you have users signing in to Azure AD B2C using the email option, and you wish to change the authentication/sign-in email address in Azure AD B2C. If my understanding of the issue is incorrect, feel free to post back.
Unfortunately, there is no way to change the authentication sign-in email in an Azure AD B2C tenant. One option is to create a new user with that email address and delete the existing one.
For more information: sign-in-options
Hope this helps. Do let us know if you any further queries.
Thanks,
Navya.
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