If you bought PaperPort 12 from Nuance’s e-store, check your email for a download link that was originally http://www.nuance.com/activations/pp12/ . Most such links redirect now, but you can contact Kofax customer support with your serial number—they often provide a fresh download link.

The 64-bit version of Windows 11/10 runs PaperPort 12’s 32-bit components without issue. However, scanner drivers provided with PaperPort 12 may not work. You will likely need to install manufacturer scanner drivers separately.

Install PaperPort™ 12SE / 14SE (Windows) - Brother support