Error Establishing Socket with SQL Server 2000

Question

I have a java application that uses JDBC to connect to a source of data.
The application has been installed on many platforms using many different data sources, but one combination has beaten me.
I am using Windows Server 2003 and SQL Server 2000 Enterprise, when the application starts up it fails to connect to the database with the following message:
[Microsoft][SQL Server 2000 Driver for JDBC] Error Establishing Socket
I have looked at a lot of forums and tried many things but nothing has fixed the problem for me:
To summarise:
The URL I am using is jdbc:microsoft:sqlserver://locahost:1433
I have also tried using the name of the machine and it's actual IP address
I have checked that TCP/IP is enabled and using the correct port (1433)
Both SQL Server and Windows authentication are enabled and I can connect using both method from ODBC
I can connect to it and use it with c#.net, vb.net and ODBC from the same machine
I have installed the latest SQL Server 2000 service pack
The application works with SQL Server 2000 Developer on Windows XP
If anyone has any other suggestions, I would love to hear from you.

Answer 1

If you printed out the SQL state and error code that would be a bit more info:
catch (SQLException e)
    e.printStackTrace();
    System.err.println("SQL state: " + e.getSQLState());
    System.err.println("SQL error: " + e.getErrorCode());
}Maybe that will give you more detail as to exactly why this is happening.
The only other thought I had was security. Maybe there's a permission to access the port that would have to be granted explicitly as part of M$'s new emphasis on security. You did say it was Windoze Server 2003. Maybe that's the difference between all the other installs and this one.
No joy from me, sorry. - MOD