今日繼續試落去，就發現自己係有另一部做前Set落已經用緊Double Hop嘅機。
Setup再有小小唔同
DoubleHop Website無enable ASP.Net Impersonation
Application Pool 係用.Net Framework v4.0.30319 . Managed pipeline mode 係”Integrated” （如果有Enable ASP.Net Impersonation，但係Pipeline mode 係Integrated，會出Error 500)