Registration Error for AUBI

[GloveNinja217]

I am almost done all the steps to configure this Portal and I am stuck.

The only time I had to deviate from instructions was when I was configure the Application in Azure AD. The App URI had to be changed from an "onmicrosoft.com" address to my company's domain before I could enable the "Multi-Tenant Option".

Now I am navigating to the Registration URL and attempting to sign-in using my Work account. It has MFA configured using the Microsoft Authenticator App. Once I sign in I receive the following error:

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Sorry, but we’re having trouble signing you in.
We received a bad request.

Has anyone encountered this error before when attempting to register? I just need some guidance to resolve this.

NOTE: All the steps I did were following the Video here: https://channel9.msdn.com/blogs/Mustafa-Kasap/How-to-Setup-the-Azure-Usage--Billing-Portal, so if I missed something please let me know.

[trevorlloydelliott]

Having the same issue. The setup guide specifies doing this as part of the publish wizard:

http://rickrainey.com/wp-content/uploads/2014/07/072914_1250_AzureADAuth12.png

But the option does not seem to be present with VS 2017.

[nogweii]

I had to make sure the full URL for the registration page was added to the Azure AD Application -- so http://auiregistration1234567890.azurewebsites.net/Home/Register. It then worked, but Firefox did throw a warning about the Windows login page POSTing to an HTTP site. I think if all of the HTTP urls are replaced with HTTPS, that'll resolve that warning.