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

今天在学习自己写ASP.NET 框架的时候安装玩IIS7.5以后，有用使用自定义的HttpMoudle，IIS出现了如下错误：

HTTP Error 500.22 - Internal Server Error

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

解决方法有两个，一个是在线程池中将其改成classic（经典模式）不过不推荐这么干

还有一种方法是在配置文件中添加一段：

<system.webServer>
        <validation validateIntegratedModeConfiguration="false" />
</system.webServer>