After upgrading from .NET Framework 4 to 4.5, my application is no longer able to connect to SQL Server 2000 databases using a System.Data.SqlClient.SqlConnection object. The error I receive when trying to connect is:
*******************
Connection Timeout Expired. The timeout period elapsed while attempting to consume the pre-login handshake acknowledgement. This could be because the pre-login handshake failed or the server was unable to respond back in time. The duration spent while attempting to connect to this server was - [Pre-Login] initialization=25; handshake=14974;
*******************
I am still able to connect to SQL Server 2005 and later databases after the .NET 4.5 upgrade. Prior to the upgrade, I could connect to SQL Server 2000 databases. I am assuming that SQL Server 2000 connections are no longer supported in the System.Data.SqlClient.SqlConnection class as of .NET 4.5. Could someone please verify that this is indeed the case or is there something I can do in my connection string or somewhere else to allow me to connect to a SQL Server 2000 database using .NET 4.5?
Thanks