Hello
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Yes, Azure MFA Authenticator supports push verification (push) method, and it can be used with ADFS 2019/2022 as an authentication method. You are not forced to use TOTP.
Azure MFA (Multi-Factor Authentication) provides multiple verification methods, including push notification (push), phone verification, SMS verification code and one-time password (TOTP). Push verification (that is, sending push notifications to user devices through Azure MFA app) is a very convenient passwordless authentication method, which allows users to complete verification by approving authentication requests on their devices without entering passwords or one-time verification codes.
On ADFS 2019/2022, you can configure Azure MFA as the primary authentication method, and the following are the related support situations:
Azure MFA Push Notification: Azure MFA can be authenticated through push notification. When a user tries to sign in, Azure MFA sends a push notification to the user's Authenticator app, and the user can click the notification to verify. This approach fully complies with the requirements of Passwordless Authentication.
Azure MFA Configuration: When configuring Azure MFA in ADFS, you can choose different verification methods, including push notifications (by default). This way, you don't have to rely on the traditional time-based one-time password (TOTP) method.
Azure AD and ADFS integration: Support for the Azure MFA push method is usually done through Azure AD, and in an ADFS environment, you need to ensure that Azure MFA has been properly integrated and the relevant configuration supports push notifications.
I hope the above information is helpful to you.
Best regards
Runjie Zhai