What change did you make to the DHCP settings on the VPC? I am having the same issue in AWS: Error: NPIP tunnel setup failure during launch. Please try again later and contact Databricks if the problem persists. Instance bootstrap failed command: WaitForNgrokTunnel Failure message (may be truncated): Timed out waiting for ngrok tunnel to be up Code: NPIP_TUNNEL_SETUP_FAILURE