Any made to your computer (like a system update or new antivirus)
: The most frequent cause is the absence of the Sentinel driver , which allows the operating system to communicate with the USB key. parashara light 9.0 hardware key not found
The "Hardware Key Not Found" error in Parashara Light 9.0 is almost always a , not a broken dongle. Reinstalling the Sentinel HASP driver while running as administrator resolves 95% of cases. If you have upgraded to Windows 11 or a new M1/M2 Mac (via emulation), you will likely need to move to a newer version of the software, as legacy USB dongles are no longer supported on those platforms. Any made to your computer (like a system