Log in to your Azure Account, if you don't have one read this article and create Azure AD B2C as described here.

Click on All resources and find your Azure AD B2C tenant and click on it.

Click on Azure AD B2C Settings

Azure AD B2C Tenant

Choose your account and click on Azure AD B2C Settings.

If you get this error you have to create new Azure AD B2C tenant because the b2c-extensions-app is created automatically as part of creating an Azure AD B2C tenant. It should always be created. If you create a new tenant and this app is not present, you should open a support case so that the Azure AD B2C team can look into this.

Now I have a working Azure AD B2C Tenant

Azure AD B2C

Click on Applications

Applications

Click on Add

Provide Name, click on Yes for Include web app and Allow implicit flow. Then specify reply url and sApp ID URI. I am going to explain all this later.

Click on Create.

Applications

Remember this APPLICATION ID, this is called client id in the config files we are going to use later.


Create Azure Account

Create Azure Active Directory(AD) B2C