Azure AD B2C Profile editing & native application - azure

We use Azure AD B2C in a native mobile application. In our user account management blade we would like to use an Azure AD B2C profile editing policy. Is there a way to use an this kind of policy without having the sign-in process? We already have the id_token, can we way send it thru a parameter to prevent the user from having to sign-in once again?
Thanks in advance

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Azure AD B2C profile edit available options

I am new to Azure AD and trying to setup and learn Azure AD B2C. I am able to run built in user flows and created custom policies to update user profiles. But Just wanted to check, if end users of my applications can edit their profile using https://myaccount.microsoft.com ? Or built-in user flows and custom policies in Identity Experience Framework are the only two options?
No, that link is for Azure AD, not B2C.
You have to use the B2C flows.

Azure AD B2C MFA and remember device

How to login with MFA to a AZURE AD B2C App using the login url(URL given below) provided by microsoft?
Do we have any URL to validate users login with MFA Azure AD B2C?
https://login.microsoftonline.com/<tenant>/oauth2/v2.0/token
That URL is only part of the flow.
The whole flow is here.
The easiest way to achieve this is to use one of the MSAL libraries.
MFA is not part of the OpenID Connect flow.
You have to add it.

Azure AD B2C Authentication - Restrict to only certain customer users

I have an ASP.Net core web application and integrated authentication using the Azure AD B2C Tenant/Application. I'm able to authenticate and get the user claims in my web application.
But what I additionally want is to allow only certain customer users access the web application. I want to do this at the B2C Tenant itself. Right now any B2C customer user can sign in. Any help, ideas, insight will be appreciated.
You may know there is an Manage user assignment for an app feature in Azure Active Directory. But it's not available in Azure B2C.
Currently the recommended way to control the access in Azure B2C is defining custom attributes and check the claims in token.
If the expected claim is included, you allow the user to continue.

Has a way to enable Microsoft Authenticator in Azure AD B2C?

In my project, this a fundamental part of project. Windows Hello for Bussiness and MS Authenticator is secure and easily to use, the goal here is enable this in Azure B2C SUSI to increment safety and provide a fast way to SignIn for user.
The point is, has a way to do that in B2C? Replace normal password to a paswordless way authentiation
There is a possibility to achieve Multi factor authentication using Authenticator app. It is documented and a sample is provider here: Azure AD B2C: TOTP multi-factor authentication
With Azure Active Directory (Azure AD) B2C, you can integrate TOTP-based Multi-Factor Authentication so that you can add a second layer of security to sign-up and sign-in experiences in your consumer-facing applications. This requires using custom policy and custom REST API endpoint. If you already created sign-up and sign-in policies, you can still enable Multi-Factor Authentication.
Below is the user auth flow using TOTP:
At this time, MS does not support primary Auth using Authenticator for B2C. You can request this via the Azure AD B2C forum in feedback.azure.com
SMS and Phone verification are the options available as of now.

Can I use Azure MFA without use its SSO login?

I want to support MFA(Multiple factor authentication) in my web app and iOS app. And my customer suggests us to use Azure MFA.
But I only find document about how to enable Azure MFA if app is integrate with Azure AD and SSO page.
My Question is: Can I use Azure's MFA service with my custom login page? but not Azure's login page.
Thanks.
No.
If a user has MFA, they must login through the Azure AD login page.

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