C# IIS 7.5虚拟目录运行时错误

我有IIS 7.5和一个网站

我添加了新的虚拟目录，并出现

运行时错误

我尝试将此web应用程序添加为新网站，一切正常，但它在虚拟目录中无法工作

有什么建议吗

事件查看器警告：

Exception information: 
    Exception type: ConfigurationErrorsException 
    Exception message: It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level.  This error can be caused by a virtual directory not being configured as an application in IIS. (C:\inetpub\wwwroot\Admin\web.config line 49)
   at System.Configuration.ConfigurationSchemaErrors.ThrowIfErrors(Boolean ignoreLocal)
   at System.Configuration.BaseConfigurationRecord.GetSectionRecursive(String configKey, Boolean getLkg, Boolean checkPermission, Boolean getRuntimeObject, Boolean requestIsHere, Object& result, Object& resultRuntimeObject)
   at System.Configuration.BaseConfigurationRecord.GetSection(String configKey)
   at System.Web.Configuration.RuntimeConfig.GetSectionObject(String sectionName)
   at System.Web.Configuration.RuntimeConfig.GetSection(String sectionName, Type type, ResultsIndex index)
   at System.Web.Configuration.RuntimeConfig.get_Identity()
   at System.Web.HttpContext.SetImpersonationEnabled()
   at System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context)



Request information: 
    Request URL: http://ngg-l.com/admin 
    Request path: /admin 
    User:  
    Is authenticated: False 
    Authentication Type:  
    Thread account name: IIS APPPOOL\NGG 

Thread information: 
    Thread ID: 13 
    Thread account name: IIS APPPOOL\NGG 
    Is impersonating: False 
    Stack trace:    at System.Configuration.ConfigurationSchemaErrors.ThrowIfErrors(Boolean ignoreLocal)
   at System.Configuration.BaseConfigurationRecord.GetSectionRecursive(String configKey, Boolean getLkg, Boolean checkPermission, Boolean getRuntimeObject, Boolean requestIsHere, Object& result, Object& resultRuntimeObject)
   at System.Configuration.BaseConfigurationRecord.GetSection(String configKey)
   at System.Web.Configuration.RuntimeConfig.GetSectionObject(String sectionName)
   at System.Web.Configuration.RuntimeConfig.GetSection(String sectionName, Type type, ResultsIndex index)
   at System.Web.Configuration.RuntimeConfig.get_Identity()
   at System.Web.HttpContext.SetImpersonationEnabled()
   at System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context)

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如错误消息所示，您需要将已添加的虚拟目录转换为应用程序。在IIS中右键单击它，您将看到执行此操作的选项。

请检查“设置”中的应用程序池……查看“事件查看器”中的“应用程序”部分，以查看确切的错误。在你的web.config中设置，以便我们可以看到实际错误。请查看我的更新问题