: Many antivirus engines flag these files as "DongleHack" or "Riskware" because they modify system registry keys and install low-level drivers.
is a compressed archive containing a 64-bit virtual USB driver used to emulate hardware security dongles. These dongles (typically Sentinel HASP , Hardlock , or SafeNet keys) are physical USB devices required by high-end engineering and design software—such as Mastercam , SolidCAM , or EPLAN—to verify licenses.
The risks — malware infection, legal liability, and system corruption — far outweigh any short-term benefit. If you encountered this file through work or study, report it to your IT security team immediately.
Instead of using multikey-x64-18.1-signed.zip , consider these legal and safe paths: