For most users, Windows 10’s native action center + keyboard settings (e.g., F1-F12 as standard keys) is more stable. Install the Toshiba Function Key Utility only if your workflow heavily depends on Fn combos, and keep a backup of the working driver version.
The (often replacing or including the older "Flash Cards" software) is a system tool that enables and manages the Fn key shortcuts on Toshiba/Dynabook laptops . Key Features
After reboot:
If the installer fails:
: Cycling through external display options or projection settings. Input Control : Enabling or disabling the touchpad and numeric overlays. Power Modes