源服务器和目标服务器都是SQL Server 2008 R2 64位，在Windows Server 2008 R2上使用SP3。我可以使用SSMS远程成功连接到它们，SQL Server登录对自定义数据库具有db_owner权限。但是当我使用导入/导出向导从一个服务器导入或导出到另一个服务器时，我收到与目标服务器相关的以下错误：
Login timeout expired
A network-related or instance-specific error has occurred while establishing a connection to SQL Server. Server is not found or not accessible. Check if instance name is correct and if SQL Server is configured to allow remote connections. For more information see SQL Server Books Online.
Named Pipes Provider: Could not open a connection to SQL Server [53]. (Microsoft SQL Server Native Client 10.0)
更新 两个服务器上都启用了命名管道和TCP / IP。