Was happening to me recently, looks like an issue with IPV6 connections. Haven’t had this issue since I disabled IPV6 on my machine. Not sure if this is a Roblox issue or an ISP issue though.
Having the same issues, the issue is happening on PC.
Details: Failed to connect to the game. (ID = 17: Connection attempt failed) Error code: 279
I am literally having the same error, did you get it resolved??
Improvements to Updating Experiences should have made the “migrate to latest update” smoother. Please post a new issue if the problem persists.
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Can confirm it’s still a problem, even 5 months after the last reply. Issue seems to happen constantly whenever I try to join any game.
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