SAML Single Sign-On (SSO) For ASP.NET Web Applications Using Azure AD As IDP

SAML Single Sign-On (SSO) For ASP.NET Web Applications Using Azure AD As IDP


ASP.NET SAML SP Single Sign-On (SSO) module gives the ability to enable SAML Single Sign-On for your ASP.NET applications. Using Single Sign-On you can use only one password to access your ASP.NET application and services. Our module is compatible with all the SAML compliant Identity providers. Here we will go through a step-by-step guide to configure Single Sign-On (SSO) between ASP.NET and Azure AD considering Azure AD as IdP.

Pre-requisites : Download And Installation

  • Download miniOrange ASP.NET SAML 2.0 Module.
  • To set up the module, extract the file asp.net-saml-sso-module-xxx.zip. You will find a DLL named miniorange-saml-sso.dll, a configuration file named saml.config and an integration.md file which contains steps for adding the module into your application.
  • Add miniorange-saml-sso.dll into your bin folder (where other DLL files for your application exist).
  • Register minorangesamlsso module in your application according to the steps provided in the file named integration.md.
  • Add the provided configuration file saml.config in the root directory of your application.
  • After integration, open your browser and browse the connector dashboard with the URL below:
    https://<your-application-base-url>/?ssoaction=config
  • If the registration page or login page pops up, you have successfully added the miniOrange SAML SSO connector to your application.
  • saml dll register
  • Register or log in with your account by clicking the Register button to configure the module.

Steps to configure Azure AD Single Sign-On (SSO) Login into ASP.NET

1. Add Azure AD in ASP.NET SAML Module

  • Go to Plugin settings section and Choose Azure AD from the list.
  • ( Microsoft Azure AD) SAML SSO , search idp
  • You will see the Service Provider Settings option, where you will get the service provider metadata. You can have three options to provide the metadata to your IDP. Keep the metadata handy as it will be required later to configure step 2.
  •  ( Microsoft Azure AD) SAML SSO find metadata

2. Configure Azure AD as Identity Provider (Setup Azure AD using ENTERPRISE APPLICATION)

  • Login into Azure AD Portal. Select Azure Active Directory.
  • asp.net saml sso azure ad : non-gallery app
  • Navigate to Enterprise Applications section and click on Add.
  • asp.net saml sso azure ad : non-gallery app
  • Now click on New Application to create new application.
  • asp.net saml sso azure ad : non-gallery app
  • Click on Create your own application. Enter the name for your app. Select the 3rd option in What are you looking to do with your application section and then click on Create button.
  • asp.net saml sso azure ad : non-gallery app
  • Click on Single sign-on from the application's left-hand navigation menu and select SAML.

  • asp.net saml sso azure ad : saml app
  • Edit BASIC SAML CONFIGURATION and enter the SP Entity ID for Identifier and the ACS URL for Reply URL from Service Provider section of the ASP.NET SAML plugin.

  • asp.net saml sso azure ad : edit basic saml configuration
  • Copy App Federation Metadata Url. This will be used while configuring the ASP.NET SAML module.

  • asp.net saml sso azure ad : metadata url
  • Assign users and groups to your SAML application.
    • Click on Users and groups from the applications left-hand navigation menu.
    • After clicking on Add user, Select Users and groups in the Add Assignment screen. Search or invite an external user. Select the appropriate user and click on the Select button.
    • After selecting the appropriate user, click on the Assign button.
    • asp.net saml sso azure ad : add users

3. Configure ASP.NET SAML Module as Service Provider

  • Go to the miniOrange ASP.NET SAML 2.0 SSO module and click on Upload IDP Metadata button.
  • Office 365 ( Microsoft Azure AD) SAML SSO with Office 365 as IDP, go to module
  • In the Metadata URL option, Paste the Metadata URL which you have copied from your IDP and click on Fetch Metadata button.
  • Office 365 ( Microsoft Azure AD) SAML SSO with Office 365 as IDP,: metadata url
  • Click Save to save your IDP details.
  • Office 365 ( Microsoft Azure AD) SAML SSO with Office 365 as IDP, : save button

4. User Attribute Mapping

User Attribute Mapping is mandatory for enabling users to successfully login into ASP.NET application. We will be setting up user profile attributes for ASP.NET applications using below settings.

  • Click on the Test Configuration button to test whether the SAML Configuration you’ve done is correct. On successful test configuration, you will get the different user attributes returned by your identity Provider in a test configuration table.
  • asp.net saml sso azure : test configuration settings
    asp.net saml sso azure : test configuration settings
  • Once you see all the values in test configuration table, click on Configure Attribute Mapping button.
  • asp.net saml sso azure : attribute mapping
  • You will be redirected to the Attribute Mapping section where you can see that the user attribute as an autofield.
  • Note: All the mapped attributes will be stored in the session so that you can access them in your application.
  • Click on Save Attribute Mapping button.
  • asp.net saml sso azure : attribute mapping

6. Integration Code

  • You can also find the Integration code in the Integration Code tab in the module. Just copy-paste that code snippet wherever you want to access the user attributes.
  • Note: All the mapped attributes will be stored in the session so that you can access them in your application.
  • asp.net saml sso azure: integration code

7. Login Settings

  • Use the following URL as a link in your application from where you want to perform SSO:
  • https://<your-application-base-url>/?ssoaction=login
  • For example you can use it as:
  • <a href="https://<your-application-base-url>/?ssoaction=login">Login</a>

8. Logout Settings

  • Use the following URL as a link in your application from where you want to perform SLO:
  • https://<your-application-base-url>/?ssoaction=logout
  • For example you can use it as:
  • <a href="https://<your-application-base-url>/?ssoaction=logout">Logout</a>

You can configure the DotNetNuke SAML 2.0 Single Sign-On (SSO) module with any Identity Provider such as ADFS, Azure AD, Bitium, centrify, G Suite, JBoss Keycloak, Okta, OneLogin, Salesforce, AWS Cognito, OpenAM, Oracle, PingFederate, PingOne, RSA SecureID, Shibboleth-2, Shibboleth-3, SimpleSAML, WSO2 or even with your own custom identity provider.


If you are looking to Single Sign-On into your sites with any SAML compliant Identity Provider then we have a separate solution for that. We do provide SSO solutions for the following:

Application LINK
SAML SSO into DotNetNuke (DNN) site Click here
SAML SSO into SiteFinity site Click here
SAML SSO into Umbraco site Click here

Additional Resources

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