500 Internal server error.

Server Error

500 - Internal server error.

There is a problem with the resource you are looking for, and it cannot be displayed.

原因：Windows2008的系统和II7下Web.confing出错，网站并不提示以下错误　

“/”应用程序中的服务器错误。

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配置错误

解决办法：

在根目录下添加Web.config文件，内容如下

<configuration>
    <system.webServer>
        <httpErrors errorMode="Detailed" />
        <asp scriptErrorSentToBrowser="true"/>
    </system.webServer>
    <system.web>
        <customErrors mode="Off"/>
        <compilation debug="true"/>
    </system.web>
</configuration>