Pre requisite: Register your application with Azure Active Directory

Before using ADAL.NET you will have to register you applications with Azure AD.

Azure AD currently supports several kinds of applications, depending on type of users they target:

• Azure AD v1 applications, let users sign-in with their work and school account use ADAL.NET and need to be registered in the Azure portal (https://portal.azure.com). If you are not familiar with v1 application registration, you might want to follow the following tutorial: Integrate Azure AD into a Windows Desktop WPF App. Reading the following article will also be valuable: Integrating applications with Azure Active Directory

• Azure AD v2 application let users sign-in with their work and school accounts or their personal accounts use MSAL.NET, which is a different library, currently in Preview.

The picture below shows in which case you want to use ADAL.NET: when you want the users of the application to sign-in with Azure AD (work and school accounts), or Active Directory FederationServices (ADFS)

Note that the application registration is different depending on if you are registering a public client application (Mobile / Desktop app), or a Confidential client application (Web App / Web API / daemon application). For instance:

• See Integrate Azure AD into a Windows Desktop WPF App for a desktop application
• See Add sign-in with Microsoft to an ASP.NET web app for a Web Application

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