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   IIS Web Core
Notification   BeginRequest
Handler   Not yet determined
Error Code   0x800700b7
Config Error   There is a duplicate 'system.web.extensions/scripting/scriptResourceHandler' section defined
Config File   \\?\E:\Home\datatech\Web\DTConferencePlay\web.config
Requested URL   http://www.datatech.com.br:80/DTConferencePlay/Login.aspx?ReturnUrl=%2fdtconferenceplay%2fMain.aspx
Physical Path   E:\Home\datatech\Web\DTConferencePlay\Login.aspx
Logon Method   Not yet determined
Logon User   Not yet determined

Config Source:

   17:       <sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
   18:         <section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
   19:         <sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">

More Information:

This error occurs when there is a problem reading the configuration file for the Web server or Web application. In some cases, the event logs may contain more information about what caused this error.

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