How to find why application cannot connect to SQL Server 2008

Question

Windows application is set to connect to the SQL Server using SQL Server authentication. When I RDP to the box where the application resides and start the application, it successfully connects to the SQL Server. When a customer runs the application on his desktop (he is on the network with the application box) and starts the application, connection fails (error. Server does not exist or access denied). The customer can ping the SQL Server IP in his command prompt. Yet, when I look at the error log on the SQL server I don't see the logs of his failure to connect. What could be blocking his access to the SQL Server?

Answer 1

您可能必须在SQL Server配置管理器中启用TCP / IP协议-默认情况下处于禁用状态。