How to Enable Azure AD B2C Login in React APP - reactjs

I have implemented azure AD B2C login in my React APP using react-aad-msal(https://www.npmjs.com/package/react-aad-msal) package but the application is login through Microsoft Login Page.. I want to login directly from my React APP login page.

Azure AD B2C only supports redirecting the user to the AAD B2C login page (Web Apps, JS apps), or using a Pop Up modal in a Javascript app. API based auth (ROPC flow) is only supported in Mobile Apps. You cannot embed our B2C login page into you applications page.

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Azure AD B2C Signup/Signin Page Implementations using Expo Auth Session

Signup/Signin functionality using Azure AD B2C user flows. We rendering the Signup/Signin page using "Expo Auth Session" Library. We build the app through expo,
After that publishing google play store. When download my app click to login button do not redirecting signin page. When development time running the app using expo go app its signup and signin works fine.
Please give me the solution of published app not working azure ad b2c userflows using expo auth session library

Selected user account does not exist in tenant 'Microsoft' and cannot access the application '71dada86-21db-493b-93e4-1a902601f30f' in that tenant

I am working on web based application where I want to redirect the user to our application signup page when non-Azure AD user(Guest user) is trying to sign in through Azure AD SSO sign in page. Is there way to customize the Azure AD SSO sign in page and redirect the user except company branding. Or is it possible to build form based authentication page and integrate with Azure AD without using B2C?
We already have set the post_log_in_redirect_uri and post_log_out_redirect_uri and working as expected on login/logout.

Authentication with App Service using Azure B2C not working

I'm trying to integrate Azure AD B2C with my App Service using the Authentication / Authorization menu in the portal (also called EasyAuth).
This is what I did:
Registered the application in Azure B2C
Recorded the App ID
Defined user flows (just Sign In)
Set up identity provider (Azure AD)
Tested the user flow, with Redirect URI pointing to jwt.ms, to see the result - works fine
Enabled Authentication / Authorization in the App Service in the Portal
Configured Azure AD authentication with the App ID from above and the link to the endpoint metadata
But now, when I access the App Service, I'm redirected to a "Logging in..." page which immediately goes to the jwt.ms page, with no JWT data, no login page, and no opportunity to enter my credentials.
Just an empty jwt page.
I couldn't find anything in the docs that can explain this.
What am I missing?

how I integrate Azure AD B2C Custom login Policy in my angularjs app?

I create external login page in my mvc app which
redirect User to custom login page..
and use that external mvc app in my angular js app.
But after login succesfully one should not able to open my angularjs app.
get Below error.
For implementing Azure AD B2C login with Angular Js application you can refer the GitHub sample

Authentication with Azure for an ionic mobile app without opening Azure Login Page

I want to authenticate My Ionic App using Azure AD By entering username and password on my custom Login and posting data without opening Azure AD login Page.
Please Provide sample code or LINK .Thanks In Advance

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