SAS EG连接总公司远程服务器，hosts文件已配置远程服务器的IP地址和名称
连接SAS APP出现以下报错，帮忙看看，感谢！
报错信息如下：
Could not establish a connection to the server on the requested machine. Verify that the server has been started and that the host and port of the server match the client's connection information.
以下为技术信息
Exception Details:
Exception type: SAS.EG.SDS.SDSException
Message: Could not establish a connection to the server on the requested machine. Verify that the server has been started and that the host and port of the server match the client's connection information.
Source: SAS.EG.SDS.Model
Target Site: SASWorkspace
Stack Trace:
在 SAS.EG.SDS.Model.Server.SASWorkspace(Boolean checkWorkspace)
在 SAS.EG.SDS.Views.View.DoPopulate(DisplayOperation& op)
Inner Exception Details:
Exception type: SAS.EC.Directory.Model.SDSException
Message: Could not establish a connection to the server on the requested machine. Verify that the server has been started and that the host and port of the server match the client's connection information.
Source: EC.Directory
Target Site: Connect
Inner Exception Details:
Exception type: System.Runtime.InteropServices.COMException
Message: Could not establish a connection to the server on the requested machine. Verify that the server has been started and that the host and port of the server match the client's connection information.
Source: SASObjectManager
Target Site: CreateObjectByLogicalNameAndLogins
Stack Trace:
在 SASObjectManager.ObjectFactoryMulti2Class.CreateObjectByLogicalNameAndLogins(String Name, Boolean synchronous, Object pIOMI, String LogicalName, LoginDef pOMRLoginDef, LoginDef pSASLoginDef, String nameValuePairs)
在 SAS.EC.Directory.Model.Server.Connect(ConnectionInfo connInfo)