Since SmarThru 4 is older software, right-click the setup file and select Properties . Go to the Compatibility tab, check "Run this program in compatibility mode for", and select Windows 7 . Click apply.
SmartThru 4 is not a driver; rather, it is Samsung’s proprietary scanning and MFP configuration software. Unlike basic Twain or WIA drivers that allow a single scan, SmartThru 4 provides a unified interface to control scanning, copying, faxing, and even network settings from a PC. Its key features include: smarthru 4 samsung scx4521f software download new