Roblox showing Error Code 279 (ID 17, “Failed to connect to the Game”) or 277 (“Lost connection to the game server”)? Roblox Support says both are connection failures, but the cause differs from one setup to another. Let’s compare what actually worked.
Video: “Roblox Error 279 Fix | Disconnected From Server - PC & Mac”, Tomb Tech YouTube channel (independent creator, not Roblox), published June 6, 2026 (11:14 Paris time), 3 min 13 s. Its DNS flush and Winsock reset steps are not in Roblox’s official articles: https://www.youtube.com/watch?v=Y5tLhLS4QEs
What Roblox Support says officially:
- 279 / ID 17: the app and the servers have trouble establishing a network connection. 277: the connection to the game server fails.
- “Very frequently a firewall problem”; in a few cases a low-bandwidth or unstable wireless connection. A broken experience can also be the cause, and only its creator can fix it.
- Windows: reinstall Roblox, then delete AppData\Local\Roblox (rmdir /s Roblox), restart and reinstall; try another connection or a wired one; allow Roblox in the firewall; UDP ports 49152–65535.
- Mobile and Chromebook: force close, restart, reinstall, and check the date and time.
Questions for players:
- Does the error happen in one experience only, or in every experience you join?
- Wi-Fi, Ethernet or mobile data: did switching connection change anything?
- Home, school or work network: is Roblox blocked or unstable on one of them?
- Which security software or firewall did you have to allow Roblox in?
- Did reinstalling and deleting the AppData\Local\Roblox folder fix it for good, or did the error come back?
- Did anything outside Roblox’s list (router restart, VPN off, DNS change) help? Please say so clearly, as it is not an official step.
Please post your device, OS version, connection type and the exact error message, and label anything unconfirmed as such.
Full guide (what 279 and 277 mean and Roblox’s official fixes): https://tricknfix.com/articles/roblox-error-code-279-id-17-277-lost-connection-windows-pc-mac-mobile-roblox-support-official-fixes/
More Roblox discussions: #roblox (https://tricknfix.com/tags/roblox/)
Sources: Roblox Support, “Error Code 279/ID 17: Failed to connect to the Game” (last edited November 28, 2025): https://en.help.roblox.com/hc/en-us/articles/36794291921684-Error-Code-279-ID-17-Failed-to-connect-to-the-Game ; “Error Code 277: Lost connection to the game server” (last edited November 28, 2025): https://en.help.roblox.com/hc/en-us/articles/36795858515860-Error-Code-277-Lost-connection-to-the-game-server-please-reconnect-Please-check-your-internet-connection-and-try-again ; “General Connection Problems”: https://en.help.roblox.com/hc/en-us/articles/203312880-General-Connection-Problems (all read November 11, 2026)
Image: official Roblox visual for The Hollow event, Roblox Newsroom (October 2026), © Roblox Corporation
Version française : https://tricknfix.com/fr/sujet/roblox-vous-ejecte-avec-l-erreur-277-ou-279-une-seule-experience-ou-toutes-wi-fi-ou-filaire-maison-ou-ecole-dites-nous-ce-qui-a-marche-1f6838171f/