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   Cannot add duplicate collection entry of type 'add' with unique key attribute 'name' set to 'UrlRewriter'
Config File   \\?\E:\combataircraft.com\combataircraft.com\news\web.config
Requested URL   http://www.combataircraft.com:80/news
Physical Path   E:\combataircraft.com\combataircraft.com\news
Logon Method   Not yet determined
Logon User   Not yet determined

Config Source:

  141: 		<modules runAllManagedModulesForAllRequests="true">
  142: 			<add name="UrlRewriter" type="News.CombatAircraft.URLRewriter.URLRewriter"/>
  143: 			<add name="ScriptModule" preCondition="integratedMode" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=1.0.61025.0, 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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