SQL Server上的WSDL提供了不支持的HTTP状态505版本

I am a DBA, not a developer, so forgive me if this is a silly question. But we are having issues with a SQL Server 2005 Web Service end point. On the local network I am able to add the reference in Visual Studio 2010 with out any issues. It uses digest as the authentication scheme.I am a DBA, not a developer, so forgive me if t