App Registration Portal throws GraphException when adding custom redirect URI
Steps to reproduce the problem:
Click an application to go to https://apps.dev.microsoft.com/#/application/...
Click Platforms -> Add Platform. Click Native Application.
Click Save. This succeeds.
Click Platforms -> Native Application -> Custom Redirect URIs -> Add URI.
Type in the URI: myscheme://microsoftauth
Click Save. This error appears:
There's a temporary problem
Exception of type 'Microsoft.AppRegPortal.Providers.Graph.GraphException' was thrown.
Error Info: Thu, 06 Sep 2018 00:08:29 GMT | BAASs | Wvw9V
Apparently, the error that was supposed to be shown was "Your URL contains a word that isn't allowed".
Replacing "microsoft" with something different in the URI fixed the issue.