Players confirm changing DNS servers can fix the Roblox “Failed to download or apply critical settings” on Windows PCs. Google DNS is the recommended alternative domain name system server to change.

If the temporary files related to Roblox become corrupted, they could interfere with Roblox’s ability to download the necessary files or apply critical settings.

If Roblox is not downloading or installing on your Windows 11/10 PC, restart your PC and if that doesn't help, use the fixes discussed here.