Error 400 in Roblox, Explained In a nutshell, Error 400 crops up due to a number of system-wide reasons, but they largely pertain to issues with the Roblox online servers.

In this Roblox Error Code 529 guide, we'll talk you through what the error means and how you can try and fix it on your end.

Roblox is not perfect, but neither is any other game. Players may find that certain functions aren't working, like guns not firing in PUBG, animations going bad and the screen starting to pixalate.