The /MediaArch x64 argument specifies that MCT downloads a 64-bit Windows 10 Enterprise edition – and in this case, v1909. If you need a 32-bit Windows version, change it to /MediaArch x86.

This application allows you to download the Home or Pro versions of Windows 10, and you can pick from the 32-bit or 64-bit version for both. Following your selections, you can install directly to ...