Check for bent USB contacts, cracked plastic casing, or signs of overheating. If damaged, no software fix will work—you need a replacement license from your Optitex reseller.
If none of the above works, the HASP key itself may be physically damaged. hasp plug failure optitex 15 solution
If you are staring at an error message telling you your security key cannot be found, you aren't just dealing with a software bug; you are dealing with a conflict between legacy hardware and modern operating systems. Here is an interesting look into why this failure happens and the definitive solutions to get you back to designing. Check for bent USB contacts, cracked plastic casing,