Are you trying to play your favorite Roblox game but keep running into error code 279? This frustrating error can stop you from connecting to games and ruin your gaming experience. Don’t worry – this guide will walk you through what this error means and how to fix it with simple steps that anyone can follow.

What is Roblox Error Code 279 and Why Does it Happen?
Error code 279 in Roblox is basically a connection problem. When you see this error (sometimes shown as “ID=17 Failure”), it means your device can’t connect properly to the Roblox game servers. Think of it as a broken bridge between your device and the Roblox world.
This error doesn’t have just one cause, which makes it tricky to fix. Some common reasons include:
- Internet connection problems
- Firewall or security software blocking Roblox
- Browser settings interfering with the connection
- Router configuration issues
- Roblox server maintenance
- Problems with the specific game you’re trying to join
Before you start troubleshooting, check if the problem is with a specific game by trying to join different Roblox experiences. If only one game gives you the error, it might be a developer issue that will fix itself when they update.
How to Fix Roblox Error Code 279
Let’s go through all the ways to solve this annoying error, starting with the simplest fixes:
1. Check if Roblox Servers are Down
Sometimes the problem isn’t on your end at all. Before trying complicated fixes, check if Roblox servers are working:
- Visit the official Roblox status page.
- Look at Roblox’s social media for announcements
If the servers are down, all you can do is wait until they’re back online.
2. Restart Your Device and Router
The classic “turn it off and on again” fix works surprisingly often:
- Restart your computer, phone, or tablet
- Unplug your router for about 1-2 minutes
- Plug it back in and wait for it to restart completely
- Try connecting to Roblox again
3. Try a Different Network Connection
Sometimes your current network is the problem:
- If you’re on Wi-Fi, try switching to a wired connection
- Test using your phone’s hotspot (if you have enough data)
- Try playing Roblox on a completely different network
If Roblox works on a different connection, your original network might have restrictions.
4. Check Your Internet Speed
Roblox needs a decent internet connection to work properly:
- Run a speed test on a site like SpeedTest.net
- Roblox recommends at least 4-8 Mbps for smooth gameplay.
- If your speed is too low, try getting closer to your router or upgrading your internet plan
5. Add Roblox to Your Firewall Exceptions
Your firewall might be blocking Roblox connections. Here’s how to fix that on Windows:
- Press the Windows key and search for “Allow an app through Windows Firewall“
- Click “Change Settings” at the top right
- Click “Allow another app” at the bottom
- Browse to find the Roblox executable file (usually in C:\Users[username]\AppData\Local\Roblox\Versions)
- Select Roblox and click “Add“
- Make sure both checkboxes are ticked
- Click “OK” to save the changes



6. Configure Port Forwarding on Your Router
This is a more advanced fix but can solve persistent connection issues:
- Access your router’s control panel (usually by typing an IP address like 192.168.1.1 in your browser)
- Find the port forwarding settings (often under “Internet” or “Advanced” settings)
- Set the port range to 49152-65535
- Select the UDP protocol
- Restart your router after making changes
7. Reset Internet Settings in Windows
Custom internet settings can sometimes cause problems:
- Open Control Panel
- Go to “Network and Internet”
- Click the “Advanced Network Setting” tab
- Click “Network Reset”
- Click “Reset Now” button
- Click “OK” to save changes



8. Reset Winsock and DNS Cache
This fix helps when your network catalog has issues:
- Open Command Prompt as Administrator (search for “cmd” and right-click to run as admin)
- Type
netsh winsock reset
and press Enter - Then type
ipconfig /flushdns
and press Enter - Restart your computer after running these commands

9. Try a Different Browser or Roblox Version
If you play Roblox in a browser, try:
- Switching to another browser (like Chrome, Firefox, or Edge)
- Creating a new browser profile without any extensions
- Clearing your browser cache and cookies
Windows users have two options for playing Roblox:
- Roblox Player: The downloadable version from Roblox’s website
- Roblox App: The version available from the Microsoft Store
If one version isn’t working, try the other one.
10. Disable Antivirus Temporarily
Sometimes your antivirus software can block game connections:
- Temporarily turn off your antivirus program
- Try playing Roblox
- If it works, add Roblox to your antivirus exceptions list
11. Reinstall Roblox
If nothing else works, try a fresh installation:
- Completely uninstall Roblox from your device
- Restart your device
- Download and install Roblox again
Roblox error code 279 is annoying but almost always fixable. Start with the simple solutions like checking your connection and restarting your device before moving on to more technical fixes. Remember that sometimes the problem might be with a specific Roblox game or temporary server issues. If that’s the case, trying again later might be all you need to do. With these troubleshooting steps, you should be able to get back to enjoying your favorite Roblox games without seeing that dreaded error code 279.