I'm deploying SQL Server 2008 Express in my company. I already installed, did a application, tested, gave permission to user.
All desktop users run the program without any problem. But the notebook users can't establish a connection with SQL Server.
- Notebook has permission in the company's network (already access network drive)
- Notebook pings the computer with SQL Server.
- I gave permission for the company's groups and explicit for notebook users
- Firewall and Anti-virus is turned off in SQL Server computer.
System.Data.SqlClient.SqlException (0x80131904): A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)
EDIT: The problem was that the notebooks wasn't in the same domain.