I ran into a weird error message yesterday when trying to connect a workstation ODBC32 to the SQL Server using Native client 10. See message below. I can't tell if I am facing NAT/firewall issues or SQL errors. I have network connectivity to the server hosting the SQL Server. I set up a new share for a folder on the C drive to test connectivity. Workstation is Windows 7 64bit and our app is a 32 bit app.
Connection failed:
SQL State: 08001
SQL Server Error: 2146893051
[Microsoft] [SQL Server Native Client 10]SQL Server Network
Interface: The requested security package does not exist.