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Guide to Configure ASP.NET Framework SAML SSO using Absorb LMS 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 Absorb LMS considering Absorb LMS as IdP.

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


  • To install the miniOrange SAML SSO NuGet package in your .NET application, simply install the miniOrange NuGet package on top of your application.
NuGet Package
.NET CLI

PM> NuGet\Install-Package miniOrange.SAML.SSO

  • After Installation, open your browser and browse the module dashboard with the URL below:
 http(s)<your-dotnet-application-base-url>?ssoaction=config
  • If the registration page or login page pops up, you have successfully added the miniOrange SAML SSO module in your application.
ASP.NET Core- registeration page

  • Register or log in with your account by clicking the Register button to configure the module.
  • After successful registration, you will receive a trial license key on your registered email address.
  • To activate the module, you can either:
    • Enter the license key received via email in the provided input field.

    OR

    • Upload the license file that you downloaded by clicking on the Click Here button.
ASP.NET Framework Verify Trial License

  • Then, check the box "I have read the above conditions and I want to activate the module", and click the Activate License button.
ASP.NET Framework Activate License

There are two ways detailed below with which you can get the SAML SP metadata to configure onto your Identity Provider end.

A] Using SAML metadata URL or metadata file

  • In the Plugin Settings menu, look for Service Provider Settings. Under that, you can find the metadata URL as well as the option to download the SAML metadata.
  • Copy metadata URL or download the metadata file to configure the same on your identity provider end.
  • You may refer to the screenshot below:
ASP.NET Core- Service Provider Metadata

B] Uploading metadata manually

  • From the Service Provider Settings section, you can manually copy the service provider metadata like SP Entity ID, ACS URL, Single Logout URL and share it with your identity provider for configuration.
  • You may refer to the screenshot below:
ASP.NET Core- enter sp data manually
  • Login to the Absorb admin portal as a System Admin and navigate to Portal Settings. From Portal Settings, there is a button in the right-side menu labelled Manage SSO Settings. If you can't see this button, please contact your Absorb Client Success Manager to discuss enabling the feature.
Absorb admin Portal

  • Click Add at the bottom of the page.
  • Now in the Name field you can enter some descriptive connection name of your choice. This name is only visible to admins.
Absorb admin Portal

  • In the Method field select SAML.
  • In the Key field enter the Service provider certificate which you can get from the miniOrange SAML plugin under the Service Provider Settings tab.
Method and Key Field

  • In the Id Property field select the Absorb user profile field that Absorb should send as the NameID in the SAML assertion. This should be a unique identifier for learners.
  • The Assertion Consumer Service Url can be left blank as it should be provided to Absorb via the SAML Request. However if you are experiencing issues, you can hard code an ACS URL which you can get from the Service Provider Setup tab of the miniOrange SAML plugin.
  • Set the Signature Type to SHA1.
  • Include User Data: You can opt to send user data from the Absorb LMA to ASP.NET site in addition to the SAML Response by enabling this toggle.

If OFF: No attributes will be included in the response.

If ON: Absorb will append the following LMS attributes to the SAML Response in the AttributeStatement:

  • FirstName
  • LastName
  • Email
  • UserId
  • Username
  • UserExternalId
  • EmployeeNumber
  • JobTitle
  • DepartmentId
  • DepartmentName
  • ExternalDepartmentId
  • IsAdmin
LMS attributes

  • Include Custom Fields: You can select to include any custom user fields present in the Absorb LMS as part of the attributes returned in the SAML Response.
Include User Data

Note: This field is only visible if Include User Data is on.


Custom Fields
  • Click on the Select your IDP button to configure a new Identity Provider.
ASP.NET Framework SAML SSO using Absorb LMS as IDP - Add New IDP
  • Under the Plugin Settings tab, select Absorb LMS as your identity provider from the list shown.
ASP.NET Core SAML SSO using Absorb LMS as IDP - Add New IDP

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.
  • Copy metadata URL or download the metadata file to configure the same on your identity provider end.
  • You may refer to the screenshot below:
ASP.NET Framework - Upload IDP 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 Framework- Configure IDP Manually
  • After uploading the metadata details, navigate to the Identity Provider Settings section. Hover over the Select Actions dropdown and click on Test Configuration.
ASP.NET Core- Test Configuration

  • The screenshot below shows a successful result. Click on SSO Integration to further continue with the SSO Integration.
ASP.NET Framework - Test Configuration

  • If you are experiencing any error on the module end you’ll be shown with the window similar to below.
ASP.NET Framework - Test Configuration Error

  • To troubleshoot the error you can follow the below steps:
  • Under Troubleshoot tab, enable the toggle to receive the plugin logs.
ASP.NET Framework - TroubleShoot

  • Once enabled, you will be able to retrieve plugin logs by navigating to Plugin Settings tab and clicking on Test Configuration.
  • Download the log file from the Troubleshoot tab to see what went wrong.
  • After testing the configuration, Map your application attributes with the Identity Provider (IdP) attributes.
  • From the left-hand menu of the miniOrange ASP.NET SAML SSO Module, click on Attribute/Role Mapping tab as shown in the image.
ASP.NET Framework - Attribute Mapping

  • If you want to pass additional attributes from your IdP, enter the Attribute Name and corresponding Attribute Value under Custom Attribute Mapping.
  • Note: All the mapped attributes will be stored in the session so that you can access them in your application.
  • Once the attributes are mapped, click Save Attribute Mapping to apply changes.
ASP.NET Core- Attribute Mapping
  • This steps allow you to retrieve the SSO user information in your application in the form of session.
  • You can also look the setup tour to understand how the SSO integration would work in your asp.net module application.
  • Just copy-paste that code snippet wherever you want to access the user attributes.
ASP.NET Framework - Integration Code

  • Note: With the trial module the authenticated user details are stored in session variables. Support of setting user claims using Header-based, Forms-Cookie-based, JWT-based authentication is available in our premium plugin.
  • Hover on Select Actions and click on Copy SSO Link.
ASP.NET Framework Copy SSO Link

  • Use the following URL as a link in the application from where you want to perform SSO:
  https://<asp.net-module-base-url>/?ssoaction=login
  • For example, you can use it as:
  <a href="https://<asp.net-module-base-url>/?ssoaction=login">Log in</a>
  • Use the following URL as a link to your application from where you want to perform SLO:
  https://<asp.net-module-base-url>/?ssoaction=logout
  • For example, you can use it as:
  <a href="https://<asp.net-module-base-url>/?ssoaction=logout">Log out</a>

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