سلام من sql رو همونجوری که گفتین نصب کردم اما وقتی توی powershill گفتین چی بزنیم زدم اما با این ارور مواجه شد الان باید چیکار کنم ؟ 5qlemd: Error: Microsoft ODBC Driver 17 for SQL Server : SQL Server Network Interfaces: Error Locating Server/Instance S pecified [xFFFFFFFF]. . Sqlcmd: Error: Microsoft ODBC Driver 17 for SQL Server : Login timeout expired. Sqlemd: Error: Microsoft ODBC Driver 17 for SQL Server : A network-related or instance-specific error has occurred while establishing a connection to 5QL Server. Server is not found or not accessible. Check if instance name is correct and i f SQL Server is configured to allow remote connections. For more information see SQL Server Books Online.