Still getting “A valid Root CA Certificate could not be located”

[jvanasco]

@webprofusion

You may also consider just using a more common web server like IIS, nginx, caddy etc and reverse proxy that back to to your 4D site as http, if not ensure that you are always using the latest version of 4D because webservers are constantly under attack while connected to the internet.

This is GREAT advice, and this technique is very often used when a web server is either older or has limited support for Ciphers and/or TLS versions.