Roblox Error Code 279 (ID 17) or 277? What “Failed to connect” and “Lost connection” mean, and Roblox Support’s official fixes for Windows, Mac and mobile

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. A third-party tutorial: it starts with the Roblox server status and a router reset; its DNS flush and Winsock reset commands are not part of Roblox Support’s steps below. https://www.youtube.com/watch?v=Y5tLhLS4QEs

Roblox stops you with Error Code 279 (ID 17, “Failed to connect to the Game”) or kicks you with Error Code 277 (“Lost connection to the game server, please reconnect”)? Roblox Support says both come from a network connection that the Roblox app and its servers cannot establish. Here is what each code means, Roblox’s official steps on Windows 10 and 11, the extra checks for Mac, iPhone, Android and Chromebook, and what to send Roblox if nothing works. Everything below comes from Roblox Help articles read on November 11, 2026; TricknFix did not test it.

What Error Code 279 and Error Code 277 mean

• Error Code 279 / ID 17 “Failed to connect to the Game”: according to Roblox, it usually happens on PCs, Macs and mobile devices when the app and the servers have trouble establishing a network connection.

• Error Code 277 “Lost connection to the game server, please reconnect”: Roblox says it occurs when the connection between the app and the servers fails, again on PC, Mac or mobile.

• Roblox’s “General Connection Problems” article says these symptoms are “very frequently a firewall problem”, and in a few cases a low-bandwidth or inconsistent wireless connection.

• It can also be the experience itself: Roblox notes that a bad script or too many objects can stop a place from running, and only its creator can fix it. Try another experience before changing your PC.

Official fixes on Windows 10 and Windows 11

• Reinstall Roblox. Windows 11: Control Panel > Programs > Programs and Features > right-click Roblox > Uninstall. Windows 10: Start > Settings > Apps > Apps & features > Roblox > Uninstall.

• Clear the app data (Roblox’s step after uninstalling): press Win+R, type cmd, press Enter, then type cd AppData\Local, press Enter, then rmdir /s Roblox, press Enter and answer y. Restart the PC and reinstall Roblox. This deletes the Roblox folder in AppData\Local: type the command exactly.

• Try another internet connection. If the error follows you, Roblox recommends contacting your internet provider.

• Use a wired connection instead of Wi-Fi if you can, to rule out the wireless link.

• Allow Roblox in your firewall and security software: Roblox says many of these programs block internet access by default.

• Router ports: Roblox says it currently uses UDP ports 49152 to 65535; keeping them open lets Roblox connect through your router.

• Playing from the website: use an up-to-date supported browser (Microsoft Edge, Firefox or Chrome), check that its security settings allow Roblox, and disable ad-blocker extensions, which can stop an experience from fully loading.

Mac, iPhone, Android, Fire tablets and Chromebook

• Roblox’s steps: force close the app, restart the device, reinstall Roblox, and try another connection.

• On iOS, Android, Amazon Fire OS and ChromeOS, Roblox also says to check that the date and time are correct, to keep the device in sync with the servers.

• On macOS, Roblox says to check that macOS has given the app access.

• Requirements: Roblox asks for an internet speed of 4–8 Mb/s or more, and says virtual machines and cloud-based computers are not supported.

Still failing? What to send Roblox Support

• Roblox asks for your Roblox username, the exact error message, your device model, the OS version, the steps to reproduce the issue, and any recent change to your device or network.

• Roblox’s error code list also has dedicated pages for codes 264, 266, 267, 268, 270, 280, 403, 524, 600 and “Failed to Load Library”.

What is not known

• Roblox’s articles give no outage information and no figures on how many players are affected; TricknFix has no data either.

• Steps you will find elsewhere (DNS flush, Winsock reset, VPN changes) are not in Roblox’s 279/277 articles; use them at your own risk.

More Roblox guides and discussions: the #roblox community on TricknFix (https://tricknfix.com/tags/roblox/).

Discussion: https://tricknfix.com/topic/roblox-error-277-or-279-keeps-kicking-you-one-experience-or-all-of-them-wi-fi-or-wired-home-or-school-network-tell-us-what-fixed-it-c5ceb8e63d/

Sources

• Roblox Support, “Error Code 279/ID 17: Failed to connect to the Game”, created April 21, 2025, last edited November 28, 2025, read November 11, 2026 (https://en.help.roblox.com/hc/en-us/articles/36794291921684-Error-Code-279-ID-17-Failed-to-connect-to-the-Game).

• Roblox Support, “Error Code 277: Lost connection to the game server, please reconnect”, created April 21, 2025, last edited November 28, 2025, read November 11, 2026 (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).

• Roblox Support, “General Connection Problems”, last edited October 17, 2022, read November 11, 2026 (https://en.help.roblox.com/hc/en-us/articles/203312880-General-Connection-Problems).

• Roblox Support, “Roblox Error Codes”, last edited October 7, 2025, read November 11, 2026 (https://en.help.roblox.com/hc/en-us/articles/36639955031060-Roblox-Error-Codes).

• Video “Roblox Error 279 Fix | Disconnected From Server - PC & Mac”, Tomb Tech, June 6, 2026 (https://www.youtube.com/watch?v=Y5tLhLS4QEs).

• Image: official Roblox visual from the Roblox Newsroom post “Securing an Ecosystem Unlike Any Other” (October 2026, 1920 x 1080 original, https://about.roblox.com/newsroom/2026/10/securing-an-ecosystem-unlike-any-other), © Roblox Corporation.