On screen: Error Code 279/ID 17: Failed to connect to the Game
This one genuinely goes both ways, so the first job is telling which you are looking at.
Roblox's explanation: error code 279 usually happens when the client application and servers are having trouble establishing a network connection. The engine name is DisconnectRaknetErrors, which points at the underlying networking library rather than at anything higher up.
That is a genuinely broad category, and it does include Roblox's own side. This is one of the codes that floods during a platform incident.
Try a different experience. If others load, the problem is that specific server or experience. If nothing loads, check the live status above — a platform incident produces exactly this. If nothing loads and Roblox looks healthy, it is your network, and a phone hotspot will confirm it in a minute.
Operator documentation: en.help.roblox.com. One thing to know about Roblox's own articles for this family of codes. We compared them and the sections after “select your operating system” are byte-for-byte identical across codes 264, 266, 268, 277, 279 and 280 — the same reinstall, clear AppData and call your ISP sequence. Only a one-to-three line paragraph differs. So the official answer is close to the same for six unrelated problems, which is why the causes below matter more than the steps.
Roblox's explanation: error code 279 usually happens when the client application and servers are having trouble establishing a network connection. The engine name is DisconnectRaknetErrors, which points at the underlying networking library rather than at anything higher up.
This one genuinely goes both ways, so the first job is telling which you are looking at.
Start with: Check Roblox status, then try another experience. Two checks, one minute, and together they place the fault.