schwim
674
To run ESX related resources, you’re going to want to go with MySQL(running two databases is not feasible).
You can try to alter your ES install to use MySQL but it would probably be easier to just start fresh. Here’s a very quick way of installing ES and ESX onto a fresh FiveM server install.
If you need a MySQL server on your Windows machine, WAMP and XAMPP are two installable bundles that will get you up and running in a jif.