The system cannot detect the physical USB dongle or the emulation driver.

Follow these sequential instructions to install the full version of FlexiSign Pro 8.6 on your computer. Step 1: Prepare the System Close all active applications running in the background.

Before starting the installation, ensure your computer hardware and operating system meet the necessary criteria for optimal stability. Minimum Hardware Requirements

Add an exception for both executables in the Windows Defender Firewall panel.

"Install Sentinel (SafNet) USB dongle drivers?"

If installing on a modern operating system, you may need to run the installer in compatibility mode for Windows 7. Step-by-Step Installation Guide

If the package is compressed (ZIP or RAR), extract the contents to a dedicated folder on your local hard drive (e.g., C:\FlexiSetup ).