How to fix Roblox Error Code 403? Fortunately, this is not a serious issue with Roblox, and you can resolve it on your own if you follow simple recommendations.

Also, allow the Roblox Player and the ports required by Roblox through the firewall. Disable your VPN to boost your internet speed and flush the DNS cache to fix network connectivity issues.

We suggest that you change your DNS settings by using the Google public DNS. If you need help on how to change the DNS settings on your machine, follow this link. Fix #3: Flush DNS.