What are the supported MFA methods for External ID in External Tenants?

Canming Jiang 1 Reputation point

According to the documentation, it appears that only an email one-time password (OTP) is supported. However, we found that the SMS OTP also works. Could we obtain confirmation regarding this?

Additionally, is there an estimated timeline for supporting the Microsoft Authenticator App as a multi-factor authentication (MFA) method?

Microsoft Entra External ID
Microsoft Entra External ID
A modern identity solution for securing access to customer, citizen and partner-facing apps and services. It is the converged platform of Azure AD External Identities B2B and B2C. Replaces Azure Active Directory External Identities.
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  1. Sandeep G-MSFT 16,691 Reputation points Microsoft Employee

    @Canming Jiang

    Thank you for posting this in Microsoft Q&A.

    As Pawan Nrisimha mentioned above, SMS OTP is still in Private preview and it is not available for all the tenants in working condition. This feature might be working in few opted tenants and in few tenants, it might not be working.

    About the authenticator app for external ID users, currently we are not sure if this feature will be lined up for future. We do not have any particular timeline for the same.

    However, you can submit your feedback in Azure feedback portal asking for this feature.


    Let us know if you have any further questions.

    Please "Accept the answer" if the information helped you. This will help us and others in the community as well.

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  1. Pawan Nrisimha 0 Reputation points Microsoft Employee

    SMS OTP is in preview. We will announce when it’s Generally Available - stay tuned.