Unable to open tcp connection. No connection could be made because the target machine actively refused it. exit status 1 - sql

Question

I tried to fetch data from a SQL Server database. When I run, it keeps giving me this error:
unable to open tcp connection with host 'localhost:1433': dial tcp [::1]:1433: connectex: No connection could be made because the target machine actively refused it.
exit status 1
My code:
package main
import (
"database/sql"
"fmt"
"log"
_ "github.com/denisenkom/go-mssqldb"
)
var kiosk string
var server = ".\\MSSQLSERVER01"
var port = 1433
var user = "DESKTOP-37624KK"
var password = "**********"
var database = "Kiosk"
func main() {
connString := fmt.Sprintf("server=%s;user id=%s;password=%s;port=%d;database=%s", server, user, password, port, database)
db, err := sql.Open("mssql", connString)
if err != nil {
fmt.Println("Error in connect DB")
log.Fatal(err)
}
rows, err := db.Query("SELECT * FROM Kiosk")
if err != nil {
log.Fatal(err)
}
for rows.Next() {
if err := rows.Scan(&kiosk); err != nil {
log.Fatal(err)
}
fmt.Println(kiosk)
}
defer rows.Close()
}
Checked if firewall is blocking needed port
Tried to change and connect to new ports
Tried to search on the internet for other solutions. Nothing has helped yet

Answer 1

The server variable value is wrong. The dot (.) means "localhost". If the SQL server is installed locally just use "." (or ".\InstanceName" - if there are multiple instances installed). If the server is installed in the network just use SERVERNAME (without the leading backslashes), or SERVERNAME\InstanceName.