Access Denied After Updating Web.Config to 4.5.1 Framework RRS feed

  • Question

  • User-748031297 posted

    Windows Server 2008 R2.  IIS 7. Visual Studio 2012.

    I modified my web.config file to upgrade from .NET Framework 3.5 to 4.5.1 per the manual instructions at http://msdn.microsoft.com/en-us/library/vstudio/dd483478%28v=vs.100%29.aspx.  No other files in my web site changed other than the web.config.  The web site builds (compiles) fine in VS, with no errors.  Before the change in framework, I could select the default.aspx file, run it in debug (on my local computer) and the site came up fine.  Now when I select default.aspx and try to open in the debugger (IE 11), I get the following error page:

    Server Error in '/' Application.

    Access is denied.

                 Description: An error occurred while accessing the resources required to serve this request. The server may not be configured for access to the requested URL.            
    Error message 401.2.: Unauthorized: Logon failed due to server configuration.  Verify that you have permission to view this directory or page based on the credentials you supplied and the authentication methods enabled on the Web server.  Contact the Web server's administrator for additional assistance.

    Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.18446        

    Wednesday, August 20, 2014 11:56 AM


  • User-748031297 posted

    THE ANSWER.  I found this solution at http://aspdotnerd.blogspot.com/2012/11/error-message-4012-unauthorized-logon.html

    Resolved by:

    1.  Pressing F4 which brings up the Properties pane in the bottom right hand corner:

    2, Choosing the application in the Solution Explorer pane. This will then display all the properties relevant to the project in the Properties pane.

    3. Change the "Windows Authentication" property to Enabled.

    HOWEVER, I have a question.  Why did I not have to do the above with my site when under framework 3.5?

    • Marked as answer by Anonymous Thursday, October 7, 2021 12:00 AM
    Wednesday, August 20, 2014 12:11 PM