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WebSsoAuthenticationModule Class
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WebSsoAuthenticationModule Class

Acts as the resource Web Server HttpModule. Enables ASP.NET applications to use AD FS for authentication.

Namespace: System.Web.Security.SingleSignOn
Assembly: System.Web.Security.SingleSignOn (in system.web.security.singlesignon.dll)

The Web Server uses the ASP.NET WebSsoAuthenticationModule to obtain the identity of the user and perform the access check. To add this module to a Web application, the web.config file for the resource Web Server virtual directory must include an entry for this HttpModule.

The WebSsoAuthenticationModule registers a handler for the BeginRequest event and processes the WebSSO protocol messages at this point by performing all the necessary cookie, query string and HTTP POST message processing. Depending on the configuration, the WebSsoAuthenticationModule may perform 302 redirects to the Logon Server automatically or it may pass control to the resource Web form if the client is not authenticated.


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Development Platforms

Target Platforms

Windows Server 2008, Windows Server 2003, Windows Vista, Windows Server 2003 R2, Windows XP
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