我对asp.net项目仍然有问题。在Visual studio中，当我开始调试时，一切都很好，页面也能正常工作，但当我在iis7上尝试时，会显示此错误。
显示错误：
配置错误描述：处理服务此请求所需的配置文件时出错。请查看下面的具体错误详细信息，并适当修改您的配置文件。
分析器错误消息：无法识别的属性targetframework。请注意，属性名称区分大小写。
源错误：
Line 18: </connectionStrings>
Line 19: <system.web>
Line 20: <compilation debug="true" targetframework="4.0" />
Line 21: </system.web> Line 22:
源文件：C:\inetpubwwwrootweb.config行：20
targetFramework似乎有问题，但我不知道是否必须在我的web配置中配置iis服务器或其他什么。
thx。
Change the .NET version on the Application pool for your website. It must be .NET 4.0, not the .NET 2.0 View a List of Application Pools (IIS 7)
确保应用程序池设置为使用.NET 4.0。
将应用程序池更改为与.NET 4.0兼容。
打开IIS，然后单击列表中的应用程序池，并将其修改为使用.NET Framework 4.0。
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