MongoDB Connection Error: Error: querySrv ECONNREFUSED || Why MongoDB Not Connecting in Node.js?
Getting this error in your Node.js app? 👇
❌ MongoDB Connection Error: querySrv ECONNREFUSED
This usually happens after updating Node.js (v18, v20 or later), and your app suddenly stops connecting to MongoDB Atlas.
Why this happens:
This is a DNS issue — Node.js fails to resolve MongoDB SRV records using your system DNS.
Quick Fix (Working Solution):
Just add these lines in your db.js file:
const dns = require("dns");
dns.setServers(["1.1.1.1", "8.8.8.8"]);
This forces Node.js to use Google & Cloudflare DNS and fixes the connection instantly.
No need to change system settings or waste hours debugging!
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