On Windows 11, do not rely on the Toshiba RFBUS driver. Remove it and use native Windows wireless management. For function keys, try SharpKeys or AutoHotkey scripts instead.
Here is the relevant content regarding the on Windows 11 . What is the Toshiba RFBUS Driver? The Toshiba RFBUS Driver (Radio Frequency BUS) is a system driver for older Toshiba laptops (e.g., Satellite, Tecra, Portégé series from ~2008–2013). It manages communication between the system bus and integrated wireless devices (Wi-Fi, Bluetooth, sometimes 3G/4G modules) that connect via an internal RF switch. toshiba rfbus driver windows 11
⚠️ exists for Windows 11 on legacy Toshiba hardware. If you need full hotkey support, consider dual-booting Windows 10 (which handles the driver better) or using a lightweight Linux distro (Toshiba RFBUS is not required there). Final Verdict | Approach | Success Rate | Stability | |----------|--------------|-----------| | Disable signature enforcement + Win8.1 driver | Medium (50-60%) | Unstable | | Generic Microsoft bus driver | High (100%) | Very stable | | Third-party driver tools | Low (<20%) | Risky | On Windows 11, do not rely on the Toshiba RFBUS driver