Roblox error code 403 is caused by an authentication error. Here's how to fix Roblox error code 403 once and for all.

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

Method 3: Reinstall Roblox Sometimes the problem can already be caused by a corrupted game file. To fix this you will have to uninstall the game then install a fresh version from the Microsoft Store.