500 error after install - the related configuration data for the page is invalid


After successfully installing DyKnow on Server 2012, you receive the following error:


HTTP Error 500.19 - Internal Server Error

The requested page cannot be accessed because the related configuration data for the page is invalid.

Config Error: There is a duplicate 'system.web.extensions/scripting/scriptResourceHandler' section defined.

Config Source: <section name="scriptResourceHandler type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=



This error comes when the Default Application Pool is set to use .NET 4 instead of .NET 2. To correct this, please see the Installing section in our setting up Server 2012 walk through: https://support.dyknow.com/hc/en-us/articles/201012628-Internet-Information-Services-IIS-Installation-Guide-for-Windows-Server-2012-and-2008

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