另外欧盟-GE-NE的回答，如果启用匿名身份验证，那么你需要确保用户被仿冒（默认IUSR）已读访问您的网站目录。

Further on eu-ge-ne's answer, if 'Anonymous Authentication' is enabled then you need to make sure the user it is impersonating (default IUSR) has read access to your website directory.

如果您已设置为使用你的应用程序池标识的用户（默认的网络服务），那么很明显确保该用户已读访问您的网站目录。

If you have set it to use your application pool identity's user (default NETWORK SERVICE) then obviously make sure that that user has read access to your website directory.