无法从Windows服务连接到远程服务器

Question

当我尝试从本地计算机上安装的.Net Windows服务连接到远程服务器时，它可以正常工作，但是当将Windows服务安装在安装了Web应用程序的同一服务器上时，会出现以下错误：

"Unable to connect to the remote server"

Answer 1

There are many possible reasons for this.
But this is a guessing game with multiple combinations of choices and paths since you did not describe the context well (which Windows, editions and versions, etc.).

One of the possible reasons is "Loopback check" security feature in Windows: http://support.microsoft.com/kb/896861