TechPulse

🎮 How to Fix Roblox Error Code 279 on PC, Android & iPhone (2026 Complete Guide)

Meta Description:
Learn how to fix Roblox Error Code 279 in 2026. Step-by-step solutions for PC, Android, iPhone, Wi-Fi, and mobile data. Works for all devices.

🧩 What Is Roblox Error Code 279?

Roblox Error Code 279 appears when your game client cannot connect to Roblox servers.
This usually happens because of network problems, firewall restrictions, browser issues, or blocked ports.

Common error message:

“Failed to connect to the Game. (ID = 17: Connection attempt failed; Error Code: 279)”

This guide will show you how to fix it permanently on Windows, Android, and iOS.

📌 Main Causes of Error Code 279

  • Weak or unstable internet connection

  • Router blocking Roblox ports

  • Firewall blocking Roblox

  • Browser cache problems

  • VPN or proxy interference

  • Corrupted Roblox files

🖥️ Fix Roblox Error Code 279 on Windows PC

🔹 Solution 1: Check Your Internet Connection

  1. Restart your router

  2. Restart your PC

  3. Run a speed test

  4. Try opening Roblox again

🔹 Solution 2: Allow Roblox Through Firewall

  1. Open Control Panel

  2. Click Windows Defender Firewall

  3. Choose Allow an app

  4. Find Roblox and enable both Private and Public networks

  5. Click OK

Restart your PC and try again.

🔹 Solution 3: Open Required Roblox Ports

Roblox requires these ports:

UDP: 49152–65535
TCP: 80, 443

Open your router settings and add these ports to Port Forwarding.

🔹 Solution 4: Clear Browser Cache

If using Roblox in browser:

  • Open browser settings

  • Clear cache and cookies

  • Restart browser

  • Log in again

📱 Fix Roblox Error Code 279 on Android

🔹 Solution 1: Switch Network

Try:

  • Mobile data instead of Wi-Fi

  • Or another Wi-Fi network

🔹 Solution 2: Disable VPN

VPNs often block Roblox connections.

  1. Go to Settings > Network

  2. Turn VPN off

  3. Reopen Roblox

🔹 Solution 3: Clear Roblox App Data

  1. Settings → Apps → Roblox

  2. Storage → Clear Cache

  3. Restart phone

  4. Open Roblox again

🍎 Fix Roblox Error Code 279 on iPhone

🔹 Solution 1: Reset Network Settings

  1. Settings → General → Transfer or Reset iPhone

  2. Reset → Reset Network Settings

  3. Reconnect Wi-Fi and try Roblox again

🔹 Solution 2: Reinstall Roblox

  1. Delete Roblox app

  2. Restart iPhone

  3. Install Roblox from App Store

  4. Login and test

🛠️ Advanced Fixes

🧪 Disable Antivirus Temporarily

Some antivirus programs block Roblox traffic.
Turn it off briefly and test Roblox.

🌐 Change DNS Server

Set DNS to:

Primary: 8.8.8.8  
Secondary: 8.8.4.4

This often fixes connection issues instantly.

🧭 When Error Code 279 Is Not Your Fault

Sometimes Roblox servers are down.
Check Roblox Status Page or social media.

If servers are offline, just wait — the issue will resolve itself.

🧾 Final Checklist

✔ Internet stable
✔ Firewall allows Roblox
✔ Required ports open
✔ VPN disabled
✔ Cache cleared
✔ Roblox updated

🏁 Conclusion

Roblox Error Code 279 is annoying but 100% fixable.
Follow this guide step-by-step and you should be playing again within minutes.

If the problem continues, your internet provider may be blocking gaming traffic — contact them for assistance.