If Roblox Marketplace is not working or loading and you see If you are having trouble loading Marketplace message, then see this post.

Fix Authentication Failed, Error Code: 0, An error was encountered during authentication on Roblox by following the suggestions in this post.

How to fix an error occurred while starting Roblox? If you’re experiencing the error occurred while starting Roblox, you’ll have to do a number of troubleshooting steps to fix the problem.

Can't long into Roblox because of the error "User Status May Not Be Up to Date"? Here is everything you need to know about fixing it.