Here is where you find the offline installer. You are looking for a file name that includes:
Always download the installer directly from the Kyocera Document Solutions Support Center . Avoid third-party "driver update" sites which often package malware with the installer. Kyocera Print Center Offline Installer Download
https://downloads.kyoceradocumentsolutions.com/.../KPC_Full_[version].exe Here is where you find the offline installer