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Is it currently possible to use Microsoft Authenticator push notifications with number matching (where the user receives a notification and must enter the number) as a verification method within B2C custom policies?

Ahmad Muztaba 25 Reputation points
2025-05-12T10:52:42.18+00:00

I am currently working with a custom policy and exploring the possibility of integrating Microsoft Authenticator push notifications with number matching. Specifically, I want users to receive a push notification containing a number they must match in order to authenticate, as part of the custom policy flow. In the existing TOTP-based setup, the app only generates a 6-digit code that users manually copy and paste. However, no push notification is being sent.

Microsoft Security | Microsoft Entra | Microsoft Entra External ID
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  1. Jyotishree Moharana 1,865 Reputation points Microsoft External Staff Moderator
    2025-05-12T16:36:09.55+00:00

    Hello @Ahmad Muztaba,

    We understand you want to modify your Azure AD B2C custom policy by integrating Microsoft Authenticator push notifications with number matching, replacing the current TOTP-based setup where users manually enter a six-digit code. While this would offer a more secure and user-friendly experience, it's important to note that Azure AD B2C currently does not support push-based multi-factor authentication with Microsoft Authenticator neither with nor without number matching through custom policies. The currently supported MFA methods through custom policies for B2C are below.

    User's image

    Multi-factor-authentication-b2c-custom-policy

    The push feature is available in standard Azure AD environments via Conditional Access but not in B2C, which only supports TOTP MFA via code entry. As a result, push notifications are not triggered in your current configuration because the underlying Identity Experience Framework in B2C doesn’t expose the necessary APIs.

    Microsoft is evolving B2C and may eventually integrate push-based MFA (with number matching) as this feature has been frequently requested by many customers.

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