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

Clear the Roblox cache. Delete Roblox cookies and site data from your browser. Disable fullscreen optimizations for Roblox. Try using Roblox’s Microsoft Store version.

To fix this you will have to uninstall the game then install a fresh version from the Microsoft Store. After performing the steps listed above you will successfully fix the configuring Roblox loop ...

Is Microsoft Store not opening on your Windows PC? Issues such as incorrect date and time, internet problems, app corruption, accumulated cache, and more could cause this problem.