Azure AD Application not appearing in existing AD App list for an Azure web application

Question

I was just going through some walkthrough where I created an Azure AD App to use it as an authorization/authentication in my Azure web application.

Now when I go to select existing AD app for my Azure website (App Services) it doesn't appear in my Azure AD Applications list.

The path to add existing AD app is "App Services > MyAzureApp > Authentication/Authorization > Auzre Active Directory > Express > Select existing AD App"

I have used following settings for my Azure AD app:

Sign-on URL:
https://login.windows.net

Reply URLs:
https://msmanaged-na.consent.azure-apim.net/redirect

Required permissions:
Azure Service Management API > Access Azure Service Management as organization users

Keys:
Added a key and set it's expiration date to 1 year

Help please.

Update (@dstrockis):
I pasted this in the browser https://login.microsoftonline.com/(tenantname).onmicrosoft.com/oauth2/authorize?client_id=(API Acces-Keys-GeneratedKey)=&redirect_uri=(https://azuresitename.azurewebsites.net/.auth/login/aad/callback)&response_mode=query&response_type=code+id_token&scope=openid&nonce=12345

And I got a bad request. See image below

Answer 1

If you want to configure authentication for your application, please follow the Manual approach mentioned here. I have done this to my App service and its working fine.