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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

Roblox Error Code 279 (ID 17) or 277? Roblox Support says both are connection failures between the app and its servers. Official fixes: reinstall and clear AppData, firewall, wired connection, UDP ports 49152–65535, date and time on mobile.

Official Roblox logo in white on a black background next to a tilted grid of Roblox experience thumbnails

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