How to implement Single Sign-On with ABP commercial application

abp commercial core zero azure authentication microsoft identity platform single sign-on Apr 22, 2022



There are lots of reasons for using SSO for custom applications owned by the same enterprise organization.  SSO establishes better user experience, less development time and improved security. 

SSO also enables to upgrade a large codebase a piece at a time instead of all at once, you will be able to effectively link them together as if they were one.

In this article, we’ll simulate such a scenario by implementing SSO for an .Net core MVC application and an ABP Commercial modular application. 

Through this article you will also learn how the two platforms implement authentication.



Creating the ASP.Net core application in Visual Studio 


This application will be with Authentication Type Microsoft Identity platform.



Install required components like dotnet msidentity tool.





Update dependencies in Visual Studio. After updating, entries are generated in the appsettings.json file for Domain, ClientID etc.




Add link on the Index page of the application that will redirect the user to the ABP application  

           ViewData["Title"] = "Home Page";
        <div class="text-center">
        <h1 class="display-6">
            Welcome to Authentication Module
            <a  href="http://localhost:4200/dashboard" target="_blank">
            Login ABP</a>    

Creating an application in Azure Active Directory

  1. Login into your Microsoft Azure account
  2. Select Azure Active directory in the left sidebar

Click + Add. 

Click on App registration



Enter the application name



Click on Register button.

Getting the Client secret 

Select the application which you have created.



Click on Add a certificate or Secret



Click on +New client secret



Click on Add button



It will create new Client Secret Id and Value, Copy and store the key value. You won't be able to retrieve it after you leave this page



Click on Add Redirect URL



Click on + Add a platform



Click on Web



Configure Redirect URL



Set Advance Setting 



Performing Changes in the ABP Web Application

Create a new ABP Commercial application either using the ABP CLI or through ABP Suite by following the steps outlined here



Overwrite the method OnGetAsync()

 using Microsoft.AspNetCore.Authentication;
 using Microsoft.AspNetCore.Authentication.MicrosoftAccount;
 using Microsoft.AspNetCore.Identity;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.RazorPages;
 using Microsoft.Extensions.Options;
 using Owl.reCAPTCHA;
 using System.Threading.Tasks;
 using Volo.Abp.Account.ExternalProviders;
 using Volo.Abp.Account.Public.Web;
 using Volo.Abp.Account.Public.Web.Pages.Account;
 using Volo.Abp.Account.Security.Recaptcha;
 using Volo.Abp.DependencyInjection;
 using Volo.Abp.Security.Claims;      
    namespace AcmeBookStore.Pages.Account
         [Dependency(ReplaceServices = true)]
         public class AppLoginModel : LoginModel
         public AppLoginModel(IAuthenticationSchemeProvider schemeProvider, 
         IOptions accountOptions, IAbpRecaptchaValidatorFactory 
         recaptchaValidatorFactory, IAccountExternalProviderAppService 
         accountExternalProviderAppService, ICurrentPrincipalAccessor 
         currentPrincipalAccessor, IOptions identityOptions, 
         IOptionsSnapshot reCaptchaOptions) : base(schemeProvider, 
         accountOptions, recaptchaValidatorFactory, accountExternalProviderAppService, 
         currentPrincipalAccessor, identityOptions, reCaptchaOptions)
         public override async Task OnGetAsync()
         await base.OnGetAsync();
         return await OnPostExternalLogin(MicrosoftAccountDefaults.AuthenticationScheme);

Add changes in class AcmeBookStoreHttpApiHostModule 

   .AddMicrosoftAccount(MicrosoftAccountDefaults.AuthenticationScheme, "Connect with 
    microsoft", options =>
       options.AuthorizationEndpoint = 
       options.TokenEndpoint = "";
       options.ClientId = "7bca7c20-2007-4001-b988-fdd1ff4872ad";
        options.ClientSecret = "JvE7Q~OqJedaFkRI5XuQqo3dMOEUaC5VD.vy1";

Now run and test the application and SSO feature.

How it all works together

Ok. Now that you’ve seen how to enable it is to enable SSO for the two apps but let us now see what is really happening behind the scenes to make it all work together.

Let’s consider that first you log into the ASP.Net core client application, it will redirect you to the Microsoft sign page (identity provider) where you sign in. 

After you sign in, a cookie will be set in your browser for the Microsoft domain.

This cookie keeps you signed into Microsoft identity platform. Then Microsoft will redirect you back to the ASP.Net application with a token which it uses to complete the sign-in process. At this point, a cookie is also set for the applications domain. 



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Connect with us to avail our expertise on ABP Commercial and ASP.NET Zero frameworks and work with our Global Delivery Team.

Connect with us to avail our expertise on ABP Commercial and ASP.NET Zero frameworks and work with our Global Delivery Team.
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