If you have tested the dongle on multiple PCs with legacy drivers and it remains unrecognized (no LED, no driver install), the dongle is dead. Unfortunately, .
Microsoft began strictly enforcing in 64-bit versions of Windows 10 and 11. The original Sentinel drivers for PL 9.0 are unsigned or use an old SHA-1 certificate that Windows now rejects. Consequently, Windows blocks the driver from loading, and the dongle appears as an "Unknown USB device." parashara light 9.0 hardware key not found
