MongooseServerSelectionError: connect ECONNREFUSED 127.0.0.1:27017
    at NativeConnection.Connection.openUri (/mnt/d/Ecommerce/node_modules/mongoose/lib/connection.js:802:32)
    at /mnt/d/Ecommerce/node_modules/mongoose/lib/index.js:341:10        
    at /mnt/d/Ecommerce/node_modules/mongoose/lib/helpers/promiseOrCallback.js:32:5
    at new Promise (<anonymous>)
    at promiseOrCallback (/mnt/d/Ecommerce/node_modules/mongoose/lib/helpers/promiseOrCallback.js:31:10)
    at Mongoose._promiseOrCallback (/mnt/d/Ecommerce/node_modules/mongoose/lib/index.js:1141:10)
    at Mongoose.connect (/mnt/d/Ecommerce/node_modules/mongoose/lib/index.js:340:20)
    at connectDatabase (/mnt/d/Ecommerce/backend/config/database.js:4:14)
    at Object.<anonymous> (/mnt/d/Ecommerce/backend/server.js:11:1)      
    at Module._compile (internal/modules/cjs/loader.js:1085:14) {        
  reason: TopologyDescription {
    type: 'Unknown',
    servers: Map(1) { '127.0.0.1:27017' => [ServerDescription] },        
    stale: false,
    compatible: true,
    heartbeatFrequencyMS: 10000,
    localThresholdMS: 15,
    logicalSessionTimeoutMinutes: undefined
  }
}

I have used 'mongod' also.
I have created a folder also in my C:\data\db
used 127.0.0.1 also, instead of localhost

I don't know why this error is still there, after trying so many solution. How can I resolve it?

CodePudding user response：

I am running this on Windows and my task manager had stopped this service and it was not starting automatically. That's why it was not running.

If you also got the same error just check by:

1. Type "services" in Windows search bar
2. Open it and scroll upto the mongoDB service
3. Start/restart it manually if its stopped.