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I have a customer running a Delphi 7 app with Unidac 6.2.7 on a new Windows 8.x machine. When he goes to log into the sql server database he gets this error:

Named Pipes Provider Could not open a connection to SQL Server [53]

What is missing?

This error message can occur if the host or the port you are using for connection to SQL Server don't exist or are unavailable. To solve the problem, try using the advices from an MSDN article: http://social.technet.microsoft.com/wik ... ngine.aspx .