在本地运行都好好的，一放到iis上就报错了 我晕 找不出问题所在啊 帮忙看下

Parser Error 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.
是在
<authentication mode="Windows"/>
这里出现错误标记的 不太明白啊