web application error page display

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ASP.NET

Hi any one can help me my web application is run correctly in my standalone computer IIS7 but after setup my application in to window 2008 server display error page what is the problem please help me

Thanks

HTTP Error 500.19 - Internal Server Error
The requested page cannot be accessed because the related configuration data for the page is invalid.
Detailed Error Information
Module  AnonymousAuthenticationModule
Notification    AuthenticateRequest
Handler ExtensionlessUrlHandler-Integrated-4.0
Error Code  0x80070021
Config Error    This configuration section cannot be used at this path. This happens when the section is locked at a parent level. Locking is either by default (overrideModeDefault="Deny"), or set explicitly by a location tag with overrideMode="Deny" or the legacy allowOverride="false".
Config File \\?\C:\inetpub\wwwroot\WebSetcase\web.config
Requested URL   http://localhost:80/WebSetcase
Physical Path   C:\inetpub\wwwroot\WebSetcase
Logon Method    Not yet determined
Logon User  Not yet determined
Config Source
   62:         <authentication>
   63:           <anonymousAuthentication enabled="false" userName="" />
   64:         </authentication>