Will a late 2019 MacBook Pro run High Sierra 10.13?

Hey pearly_37,

We understand you're attempting to run High Sierra on your Mac. Since your MacBook Pro came with macOS Catalina, it cannot install macOS High Sierra. You can see what version came with your Mac here:

MacBook Pro (15-inch, 2019) - Technical Specifications

Operating System

macOS

macOS is the operating system that powers every Mac. macOS Catalina gives you more of everything you love about Mac. So you can take everything you do above and beyond.

The following article explains how to attempt to install an older version of macOS, and explains that if it is not compatible with your Mac then it will tell you:

How to get old versions of macOS

Have a great day.

What OS was on it when it shipped? Historically, you cannot install a OS version older that what was there when it left the factory.

Your only option in this case would be use a virtual machine such as Parallels or VirtualBox so you can install macOS 10.13 in the Virtual Machine and install your older software. Depending on the app this may or may not be an option since macOS running in the VM will be much slower than running natively on bare metal.

Or you can continue using the old Mac for that app.