An ASP.NET setting has been detected that does not apply in Integrated managed pipeline mode

ASP.NET setting has been detected that does not apply in Integrated managed pipeline mode.

May be you are missing the configuration setting;

<configuration>

    <system.webServer>

        <validation validateIntegratedModeConfiguration="false"/>

    </system.webServer>

</configuration>

That generally you will get when you are changing the VS2010 project to VS2012 –Vs2013 projects.

What is validateIntegratedModeConfiguration?

This flag will not alter the behavior of the application , it will only tell IIS to not flag an error; it will override the three new changes feature for IIS7.

• Your application's Web.config file specifies <identity impersonate="true" />.

IIS 7 Integrated mode, client impersonation is not available in early request processing stages

• Application defines the <httpModules> section in Web.config file.

IIS 7 Integrated mode, ASP.NET modules are specified with native modules in <modules> section under <system.webServer>.

• Application defines the <httpHandlers> section in Web.config file.

IIS 7 Integrated mode, ASP.NET handler  mappings are specified in unified <handlers> section under <system.webServer>.