Sorry, the latest Spine release no longer supports 32-bit Windows, but requires 64-bit Windows. Please write us via email at contact@esotericsoftware.com and I can give you the old Spine Launcher which still runs on 32-bit. For future updates, you will have to upgrade your Windows installation to 64-bit.

As mentioned, you can still use Spine on a 32-bit computer but the highest version of Spine you can run is 3.8.99.

Please note that 64-bit Windows has been available for 20 years, which is a very long time for computers. Even quite old computers should be 64-bit by now. Microsoft itself has discontinued support for all versions of Windows 7 and does not offer a 32-bit version of Windows 10.