ayi Based on what you say i would assume, the steps you need to do are the following: Create an azure subscription. (https://azure.microsoft.com/de-de/free/) Go to https://manage.windowsazure.com/ Here you need to add the app to get access like pointed out in the article you linked. A tutorial how to add your app is here https://developer.xamarin.com/guides/cross-platform/azure/active-directory/getting-started/register/ When you added the app you get a client id which you can use in the demo application. The id should like this e2e6c326-03aa-4c47-8fde-86s23834e3ad and you can change it in the StartupPage.cs at LoginButton_Clicked. That is basically the thing i did to get it to work. If you need further help on the topic, feel free to ask.