Unlike standard user applications, Multikey operates as a . This grants it Ring 0 access, the highest privilege level in the system, allowing it to interact directly with hardware and system resources. This low-level operation is necessary to emulate the deep integration of a physical USB dongle, but it also means that any bugs or vulnerabilities in the driver can lead to system instability, including the infamous "Blue Screen of Death" (BSOD).
From a legal perspective, distributing or using Multikey to bypass DRM violates the Digital Millennium Copyright Act (DMCA) in the U.S. and similar laws globally, even if the user owns a physical dongle. Court rulings (e.g., the MDY Industries v. Blizzard case) have affirmed that circumvention tools infringe on copyright holders' rights. Ethically, while software preservationists may sympathize with dongle emulation for abandoned works, the vast majority of Multikey 18.1 X64 usage enables unlicensed access to actively sold software, undermining developer revenue and update incentives.
SolidCAM, which integrates its iMachining technology into SOLIDWORKS and other CAD programs, is another major software that has been extensively "patched" using this tool. For instance, setting up a cracked version of iMachining for NX (Siemens NX) explicitly lists "Multikey 18.1.0 64位仿真器设置" (the 64-bit emulator setup) as a required step, and it instructs the user to select "USB hardware key" as the license type during installation. Multikey 18.1 X64
Management UI
Note: I interpret “Multikey 18.1 x64” as referring to a software package or component named Multikey at version 18.1 compiled for 64‑bit x86 (x64) platforms. If you meant a different product (hardware device, license key system, or a specific vendor’s product), the high‑level concepts below still apply; adjust names and implementation details to your context. Unlike standard user applications, Multikey operates as a
: Following security audits, the digital certificates used to sign historic MultiKey builds were officially revoked.
Troubleshoot > Advanced Options > Startup Settings > Restart. From a legal perspective, distributing or using Multikey
The driver is discussed in various forums and technical communities, including 3D Portal, CSDN, and specialized industrial automation forums.