Solucionado: Mensaje de error cuando se conecta a una instancia con nombre de SQL Server en un equipo cliente que usa Windows Vista o Windows Server 2008: "Specified SQL server not found" o "Error Locating Server/Instance Specified" del equipo de Soporte técnico de Microsoft
Es posible que aparezca un mensaje de error de conexión al intentar conectarse con una instancia de SQL Server 2000 o SQL Server 7.0 que ya estaba instalada, después de intentar instalar SQL Server 2005 del equipo de Soporte técnico de Microsoft
Error de conexión al iniciar sesión en Microsoft SQL Server
Sqlcmd: Error: Microsoft SQL Server Native Client 10.0 : A network-related or instance-specific error has occurred while de stackoverflow.com
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