My SQL Server default port number 1433 cannot be connected, so I can only connect with 1434. How to do the port number 1433?
1433 is the default port number of SQL SERVER. When installing SQL, if 1433 is already occupied by other programs, SQL will enable the next available port. If SQL must use port 1433, please find the service that has occupied port 1433 and release port 1433. Then change the port of SQL back to 1433.