SQL Server 2019 Express I can't connect

Question

I can't connect to SQL Server with mssql library for my express project. I can connect with VS Code and SQL Server Management Studio

var express = require('express');
var app =
 express();
const sql = require('mssql')  
var config = {
    user: 'eren',
    password: 'PAssPoxx1.',
    server: 'localhost', 
    database: 'AIRPLANE',
    options: {
        encrypt: true,
        enableArithAbort: true}  
};  
const poolPromise = new sql.ConnectionPool(config)  
.connect()  
.then(pool => {  
console.log('Connected to MSSQL')  
return pool  
})  
.catch(err => console.log('Database Connection Failed! Bad Config: ', err)) 


app.get('/', function (req, res) {
   
// Configuration object for your database

// connect to the database
sql.connect(config, function (err) {
    console.log("x")
    if (err) console.log(err);
    // create Request object
    var request = new sql.Request();
       
    // query to the database and get the records
    request.query('select * from User', function (err, recordset) {
        
        if (err) console.log(err)
        // send records as a response
        res.send(recordset);
        
    });
});
});
var server = app.listen(3000, function () {
    console.log('Server is running..');
});

My errors says:

Database Connection Failed! Bad Config: ConnectionError: Failed to connect to localhost:1433 - Could not connect (sequence) at Connection. (C:\Users\Anıl Eren\Downloads\database-api\node_modules\mssql\lib\tedious\connection-pool.js:68:17) at Object.onceWrapper (events.js:422:26) at Connection.emit (events.js:315:20) at Connection.socketError (C:\Users\Anıl Eren\Downloads\database-api\node_modules\mssql\node_modules\tedious\lib\connection.js:1290:12)
at C:\Users\Anıl Eren\Downloads\database-api\node_modules\mssql\node_modules\tedious\lib\connection.js:1116:21 at SequentialConnectionStrategy.connect (C:\Users\Anıl Eren\Downloads\database-api\node_modules\mssql\node_modules\tedious\lib\connector.js:87:14) at Socket.onError (C:\Users\Anıl Eren\Downloads\database-api\node_modules\mssql\node_modules\tedious\lib\connector.js:100:12) at Socket.emit (events.js:315:20) at emitErrorNT (internal/streams/destroy.js:106:8) at emitErrorCloseNT (internal/streams/destroy.js:74:3) { code: 'ESOCKET', originalError: ConnectionError: Failed to connect to localhost:1433 - Could not connect (sequence) at ConnectionError (C:\Users\Anıl Eren\Downloads\database-api\node_modules\mssql\node_modules\tedious\lib\errors.js:13:12) at Connection.socketError (C:\Users\Anıl Eren\Downloads\database-api\node_modules\mssql\node_modules\tedious\lib\connection.js:1290:56)
at C:\Users\Anıl Eren\Downloads\database-api\node_modules\mssql\node_modules\tedious\lib\connection.js:1116:21 at SequentialConnectionStrategy.connect (C:\Users\Anıl Eren\Downloads\database-api\node_modules\mssql\node_modules\tedious\lib\connector.js:87:14) at Socket.onError (C:\Users\Anıl Eren\Downloads\database-api\node_modules\mssql\node_modules\tedious\lib\connector.js:100:12) at Socket.emit (events.js:315:20) at emitErrorNT (internal/streams/destroy.js:106:8) at emitErrorCloseNT (internal/streams/destroy.js:74:3) at processTicksAndRejections (internal/process/task_queues.js:80:21) { code: 'ESOCKET' } }

EDIT: TCP/IP enabled Port 1433

Brian K. Burge Brian K. Burge · Accepted Answer · 2021-02-10T22:25:31

var config = {
    user: 'eren',
    password: 'PAssPoxx1.',
    server: 'localhost', 
    database: 'AIRPLANE',
    options: {
        encrypt: true,
        enableArithAbort: true}  
};

Is your sqlserver instance named mssqlserver? if not you have to specify the instance name 'localhost\SQLEXPRESS' in most cases.

SQL Server 2019 Express I can't connect

1 Answers