这些IIS服务器安装在他们网络的DAV模块，我敢打赌不需要，它是安装，因为安装人员打勾所有箱子吧。

Those IIS servers have web-dav module installed on them and i bet it is not needed and it was installed because the person installing ticked all boxes.

刚刚从IIS中删除Web-DAV。

Just remove web-dav from iis.

或者使用web.config中删除Web DAV模块：

Alternatively use web.config to remove web dav module:

<system.webServer>
    <modules>
        <remove name="WebDAVModule" />
    </modules>
    ...