| Issue | Likely cause | Workaround | |-------|--------------|-------------| | Driver installation fails | Old installer not run as admin | Run as Administrator, disable antivirus temporarily | | Dongle still not recognized | Windows replaces driver automatically | Use haveged on Linux, or force driver via Device Manager | | Blue screen after update | Incompatible driver version | Boot safe mode → roll back driver | | Activation lost | Driver reset changes dongle ID | Re-apply license file (not driver fault) |