Mongoose Server selection error [ECONNREFUSED]

Question

I started a new ExpressJS app and I am having trouble getting connected to my localhost MongoDB on Windows OS.I have read through countless forums and tried everything to get mongod and the mongodb-community server started, but nothing has worked. The error I am getting is below:

connection error: MongooseServerSelectionError: connect ECONNREFUSED ::1:27 at NativeConnection.Connection.openUri (C:\Users\User\Desktop\harta2\no at C:\Users\User\Desktop\harta2\node_modules\mongoose\lib\index.js:340: at C:\Users\User\Desktop\harta2\node_modules\mongoose\lib\helpers\promi at new Promise () at promiseOrCallback (C:\Users\User\Desktop\harta2\node_modules\mongoos at Mongoose._promiseOrCallback (C:\Users\User\Desktop\harta2\node_modul at Mongoose.connect (C:\Users\User\Desktop\harta2\node_modules\mongoose at Object. (C:\Users\User\Desktop\harta2\server.js:5:10) at Module._compile (node:internal/modules/cjs/loader:1097:14) at Object.Module._extensions..js (node:internal/modules/cjs/loader:1149 reason: TopologyDescription { type: 'Unknown', servers: Map(1) { 'localhost:27017' => [ServerDescription] }, stale: false, compatible: true, heartbeatFrequencyMS: 10000, localThresholdMS: 15, logicalSessionTimeoutMinutes: undefined } } node:internal/process/promises:265 triggerUncaughtException(err, true /* fromPromise */);

Mongoose connection code:

const mongoose = require('mongoose');
const express = require('express');
const path = require('path');

mongoose.connect('mongodb://127.0.0.1:27017/wageTeam',{
    useNewUrlParser: true,
    useUnifiedTopology: true
});

const db = mongoose.connection;
db.on("error", console.error.bind(console, "connection error:"));
db.once("open", () =>{
    console.log("Database connected");
});

const app = express();

Used this to start the server:

@echo off
cd "C:\mongodb\bin"
start mongod.exe
timeout 4
start mongo.exe
exit

Answer 1

first make sure that mongo service is exist and running because from what I see it is not working

if it is not exist reinstall MongoDB service.

Answer 2

I've changed my node version from v18 to v16.15.0 and it works very fine in my system