This article explains how to configure an instance of the SQL Server Database Engine to listen on a particular fixed port by utilising the SQL Server Configuration Manager to fix SQL error 26. In my earlier article, I have thoroughly highlighted how to get database tables size in SQL Server. The default example of the SQL Server Database Engine responses (listens) especially on TCP port 1433. Named instances of the Database Engine and SQL Server Compact are arranged for dynamic ports. This implies they select an accessible port when the SQL Server administration is started over. When you are interacting with a named instance through a firewall, configure the Database Engine to listen on a particular port, so that the fitting port can be opened in the firewall.