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.

Fix #4: Connect to a different network if available. Try to connect the device that has encountered the Roblox error code 266 to a different network to resolve the error code.

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.

Switching your default DNS server to a stable one enables you to fix a lot of errors. You can try setting up the Google DNS server on your PC and see if that resolves the error code 282 on Roblox.