Officially Magento2.3 supports only these operating systems
Linux distributions, such as RedHat Enterprise Linux (RHEL), CentOS, Ubuntu, Debian, and similar.
This is my configuration
Installed Magento2.3.0 with sample data On
PHP Version 7.2.12 (PHP compiled with Xampp)
Database Server version: 10.1.22-MariaDB - mariadb.org binary distribution
My question is about How to make this work on windows (XAMPP)?
http://magento23.me/graphql This URL doesn't load to me in windows