Roblox Error Code 279: Failed to Connect (ID 17)
Roblox error code 279 means the Roblox app could not establish a connection with the game server, so you never got into the game. Roblox’s help center describes it as the client application and servers having trouble establishing a network connection.
What does the error 279 message say?
The full message reads:
Failed to connect to the Game. (ID = 17: Connection attempt failed.) (Error Code: 279)
What causes Roblox error code 279?
Error code 279 has 5 common causes:
- A firewall or antivirus blocking Roblox.
- A router that blocks the ports Roblox uses.
- A VPN, proxy or school or work network that restricts games.
- The game server being down or no longer running that instance.
- A slow or unstable internet connection.
How to fix Roblox error code 279
Try these 5 fixes in order, and test after each one:
- Rejoin from the game’s page; the server you tried may have closed.
- Allow Roblox through Windows Defender Firewall and any third-party antivirus.
- Turn off VPNs and proxies, and try another network if you are on a school or work connection.
- Restart your router. If you manage it yourself, make sure Roblox’s UDP traffic (ports 49152 to 65535) is not blocked.
- Update or reinstall Roblox.
Check status.roblox.com first. If Roblox reports an outage, no fix on your side will help, and the error goes away once Roblox recovers.
Frequently asked questions
What does ID = 17 mean in error 279?
ID 17 is the specific reason code for the failed attempt: the connection attempt itself failed. Treat it as the same connection error.
Is error 279 my fault or Roblox’s?
Either. If every game fails, look at your network; if one game fails, the problem is probably that game’s server.
See every other code in our Roblox error codes guide.