The main objectives of this article are: Implementing Microsoft Account Authentication. Install Microsoft Account Authentication NuGet Package: Let's install the required package for Microsoft Account Authentication Visual Studio 2022: Install-Package Microsoft.AspNetCore.Authentication.MicrosoftAccount -Version 7.0.4 Visual Studio Code: dotnet add package Microsoft.AspNetCore.Authentication.MicrosoftAccount --version 7.0.4 Register Our App With Microsoft Azure Portal: To enable Microsoft authentication to our application, we have to register our app into the Microsoft Azure Portal. So following are steps to resisting the app with the Microsoft portal. (Step 1) Go to the Azure Portal 'https://portal.azure.com/'. Then select 'App Registration.' (Step 2) On the 'App Registration' page, select the 'New registration' button. (Step 3) Provide a 'Display Name' and then choose 'Supported account types'. (Step 4) Select 'Web'