Roblox error code 279: the join never reached the server

Error code 279, shown as 'Failed to connect to the game. (ID=17: Connection attempt failed),' means the Roblox client could not establish a connection to the game server. The causes split into three camps: your network or firewall blocking the connection, the specific experience's server being empty or broken, and Roblox-side trouble. Trying a different experience first is the fastest way to learn which camp you are in.

Fix it, in order

  1. Try a different, popular experience. If it joins fine, your connection works and the problem is the original experience's server; try its other servers or wait. If every experience fails with 279, the fault is local.
  2. Restart the router and your device. Connection-state faults in home gear are the most common local cause.
  3. Check the firewall and antivirus. Roblox needs outbound UDP traffic; security software that blocks the client produces exactly this error. Allow Roblox through, or test with real-time protection briefly paused.
  4. Turn off any VPN and test on a plain connection; VPN endpoints are frequently refused or too unstable for game joins.
  5. Reinstall the Roblox client if it fails everywhere on this device but works on others on the same network, a damaged client install imitates network failure.
  6. On mobile, switch networks (Wi-Fi to cellular or the reverse). One working network clears your account and device in a single test.

The ID=17 detail

The '(ID=17)' in the message is the client's internal name for a failed connection attempt, and it matters because sibling codes look similar: 277 is a connection lost after joining, while 279 is a connection that never formed. Fixes differ accordingly; 279 troubleshooting is all about the path between you and the server, not your session.

Common questions

One game gives 279, others work. Is my account fine? Yes. A per-experience 279 means that experience's servers are full, broken, or misconfigured, and nothing on your side needs repair. Trying a different server instance of the same experience sometimes slips past it.

Does 279 mean I am banned? No. Bans and moderation produce their own messages (code 267 covers kicks and bans from an experience). Code 279 is purely a connection failure.

Related

Roblox error code 277 · Roblox error code 268 · Roblox error code 524 · Roblox error code 267