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ASP.NET SAML Single Sign-On (SSO) Using Office 365 As IDP


ASP.NET SAML 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 Office 365 considering Office 365 as IdP. To know more about the other features we provide, click here

Platform Support: The ASP.NET SAML SSO module supports ASP.NET 3.5 and above frameworks.

Pre-requisites: Download And Installation


PM> NuGet\Install-Package miniOrange.SAML.SSO -Version 6.1.0
  • 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.
  • ASP.NET SAML Single Sign-On (SSO) using Office 365 as IDP - saml dll register
  • Register or log in with your account by clicking the Register button to configure the module.

Steps to configure ASP.NET Single Sign-On (SSO) using Office365 as IDP

1. Configure Office 365 as identity provider

  • You need to send your SP metadata to your identity provider. For SP metadata, use the SP metadata URL or download the SP metadata as a .xml file and upload it at your IdP end. You can find both these options under the Service Provider Settings tab.
  • ASP.NET SAML Single Sign-On (SSO) using Office 365 as IDP - Copy SP Metadata
  • Alternatively, you can manually add the SP Entity ID and ACS URL from Service Provider Settings tab in the plugin to your IdP configurations.
  • ASP.NET SAML Single Sign-On (SSO) using Office 365 as IDP - Copy SP Metadata manually
  • Go to https://portal.azure.com/ and login into Office365.
  • Log into Office365 Admin Console.
  • Click on Azure Active Directory
  • ASP.NET SAML Single Sign-On (SSO) using Office 365 as IDP - Directory-path
  • Click on App Registration -> New Registrations
  • ASP.NET SAML Single Sign-On (SSO) using Office 365 as IDP - New-App-registration
  • Enter the Application Name and enter Redirect URI (ACS URL from ASP.NET SAML SSO module from Service Provider Metadata option) then Click on Register.
  • ASP.NET SAML Single Sign-On (SSO) using Office 365 as IDP - Application-Details
  • Click on API Permissions -> Add Permission then select API as Office 365 Management APIs.
  • ASP.NET SAML Single Sign-On (SSO) using Office 365 as IDP - add permissions
  • Select the ActivityFeed.Read .
  • ASP.NET SAML Single Sign-On (SSO) using Office 365 as IDP - select activity
  • Click on Overview -> Endpoints and copy the Federation metadata document URL. Keep the metadata url handy it will require later to configure step 3.
  • ASP.NET SAML Single Sign-On (SSO) using Office 365 as IDP - Endpoint

2. Configure ASP.NET application as service provider (SSO Module)

Note: After installation of the plugin, we need to setup the trust between your ASP.NET application and Office365. SAML metadata is shared with Office365 so they can update their inbuilt configuration to support Single Sign-On.

2.1: Share SAML Metadata with Office365
  • Click on Add New IDP to configure ASP.NET Single Sign-On (SSO) with Office365.
  • ASP.NET SAML Single Sign-On (SSO) using Office365 as IDP - Click on Add new IDP
  • Under Service Provider Settings tab, you can either copy-paste the metadata URL on your IDP side or download the SP metadata as an XML file. Additionally, you have the choice to manually copy and paste Base URL, SP Entity ID, and ACS URL.
  • Share SAML metadata with your identity provider.
  • ASP.NET SAML Single Sign-On (SSO) using Office365 as IDP - SP Settings Metadata
2.2: Import Office365 SAML metadata
  • Select Office365 from the list of identity providers shown below.
  • ASP.NET SAML Single Sign-On (SSO) using Office365 as IDP - Select identity provider

There are two ways detailed below with which you can configure your SAML identity provider metadata in the module.

A] Upload metadata using the Upload IDP Metadata button:
  • If your identity provider has provided you with the metadata URL or metadata file (.xml format only), then you can simply configure the identity provider metadata in the module using the Upload IDP Metadata option.
  • You may refer to the screenshot below:
  • ASP.NET SAML Single Sign-On (SSO) using Office365 as IDP - Upload Metadata
  • You can choose any one of the options according to the metadata format you have available.
B] Configure the identity provider metadata manually:
  • After configuring your identity provider, it will provide you with IDP Entity ID, IDP Single Sign On URL and SAML X509 Certificate fields respectively.
  • Click Save to save your IDP details.
  • ASP.NET SAML Single Sign-On (SSO) using Office365 as IDP - SAML dll config

You have successfully configured your ASP.NET application as a service provider.

3. Testing SAML SSO

  • Before testing, please ensure the following:
    • The ASP.NET (SP) SAML metadata has been exported to Office365 (IDP).
    • Importing the Office365 (IDP) SAML metadata in ASP.NET (SP).
  • To test whether the SAML configuration you’ve done is correct, hover on Select Actions and click on Test Configuration.
  • ASP.NET SAML Single Sign-On (SSO) using Office365 as IDP - Click on Test Configuration
  • Note: In the trial version of the plugin, you can only configure and test one identity provider (IDP).
  • The screenshot below shows a successful result. Click on Done to further continue with the SSO Integration.
  • ASP.NET SAML Single Sign-On (SSO) using Office365 as IDP - Test Configuration
  • If you are experiencing any error on the module end you’ll be shown with the window similar to below.
  • ASP.NET SAML Single Sign-On (SSO) using Office365 as IDP - Error Window
  • To troubleshoot the error you can follow the below steps:
    • Under Troubleshooting tab, enable the toggle to receive the plugin logs.
    • ASP.NET SAML Single Sign-On (SSO) using Office365 as IDP - Enable debug logs
    • Once enabled, you will be able to retrieve plugin logs by navigating to Identity Provider Settings tab and clicking on Test Configuration.
    • Download the log file from the Troubleshoot tab to see what went wrong.
    • You can share the log file with us at aspnetsupport@xecurify.com and our team will reach out to you to resolve your issue.

4. Integration Code

  • This step allows you to specify the sso prefix of the session or claims parameter that will be used to access user attributes in your application.
  • If you're still confused about how the integration steps work, take a look at the Setup Tour.
  • ASP.NET SAML Single Sign-On (SSO) using Office365 as IDP - Prefix SSO Attributes
  • Select the mode for storing SSO attributes, and you will now see the integration code based on the authentication method you selected and the language your application uses.
  • Just copy-paste that code snippet wherever you want to access the user attributes.
  • ASP.NET SAML Single Sign-On (SSO) using Office365 as IDP - ASP.NET Integration Codes Based on language
  • Note: This trial module only supports session-based authentication and User Claims is available in the premium plugin.
  • Note: All the mapped attributes will be stored in the session so that you can access them in your application.
  • If you want some assistance regarding the integration code, get in touch with us at aspnetsupport@xecurify.com

5. Login Settings

  • Hover on Select Actions and click on Copy SSO Link.
  • ASP.NET SAML Single Sign-On (SSO) using Office365 as IDP - ASP.NET Integration Codes Based on language
  • Use the copied link in the application from where you want to perform SSO:
    https://base-url/?ssoaction=login
  • For example, you can use it as:
    <a href=”https://base-url/?ssoaction=login”>Log in</a>

6. 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 DNN SAML 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. To check other identity providers, click here

Additional Resources


Need Help?

Not able to find your identity provider? Mail us on aspnetsupport@xecurify.com and we'll help you set up SSO with your IDP and for quick guidance (via email/meeting) on your requirement and our team will help you to select the best suitable solution/plan as per your requirement.

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