The “ns error connection refused” or “ERR_CONNECTION_REFUSED” message indicates that your browser or application attempted to connect to a server or service, but the server actively rejected the connection.
This differs from a “server not found” error, as it signifies that the server was reached but refused the connection attempt.
🧭 In
Exam
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Mobile apps (like Codashop, FuboTV, banking, or shopping apps)
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Web bridge (trying to load a specific URL)
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Gaming apps (CODM, League of Legends, etc.)
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Smart TVs / streaming devices
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Or while developing apps (NS = NSError domain on iOS / macOS)
✅ How to Fix “NS Error Connection Refused”
1. 🔄 Restart Devices
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Restart your phone, app, and Wi-Fi/router.
2. 🧪 Check If the Site/Server Is Down
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Use a tool like DownDetector or isitdownrightnow.com to see if the app/site is down.
3. 🌐 Try Different Network
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Switch from Wi-Fi to mobile data (or vice versa)
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Try a different Wi-Fi network
If the error disappears, your current network is blocking or filtering the connection.
4. 🔒 Disable VPN / Firewall / Private DNS
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If you’re using a VPN, adblocker, or cost, try this
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These tools can interfere with SSL, ports, or geolocation access
5. 🧼 Clear Cache (App or Browser)
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For apps:
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Android: Settings → Apps → [App name] → Storage → Clear cache
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iOS: Delete and reinstall the app
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For browsers: Clear browser cache/cookies
6. ⛔ Check for Region Blocking
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Some apps/services block access based on location. If you’re abroad or using a VPN, they might reject the request.
Also Read : Fixed : Too Many Concurrent Requests ChatGPT
🛠 Developer Context (iOS / Swift / NSURLErrorDomain)
If you’re a developer and seeing this in a console/log like:
It usually means:
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The server is not running or not listening on that port
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You’re pointing to the wrong IP/host/port
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Localhost can’t be accessed from the simulator (e.g., use
127.0.0.1or proper interface IP) -
There’s a CORS or TLS/certificate issue if HTTPS is used improperly
