For the most part Roblox works pretty well, but sometimes you get errors like ‘Failed to Download or Apply Critical Settings.’ Figuring out the problem is a bit of a head-scratcher. Regardless ...

If you get the Failed to create directory message with error=3 when starting Roblox on your Windows PC, use these proven fixes.

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