The release of Windows 10 version 1803 (April 2018 Update) exacerbated these issues. This update not only reinforced DSE but also changed the way certain kernel-mode operations were handled. Users attempting to install the standard MultiKey.sys driver on this version often encountered the "devcon failed" error or saw the driver fail to start.
Consequently, the community developed multiple “patch” approaches to make the driver load correctly:
[Решено] Установка MultiKey на Windows 10 x64 1903 / 1909
: It functions as a virtual USB controller, tricking the software into "seeing" a physical security dongle plugged into the machine. Support for Multiple Key Types
Bypassing the signature check or using a modified signature. multikey 1803 patched
Before 1803, Multikey worked reasonably well on Windows 7, 8, and early versions of Windows 10. However, Microsoft introduced two critical changes that rendered the classic Multikey driver (particularly versions like multikey_18.1.0 and older) obsolete.
Open the Command Prompt as an Administrator and execute the following strings to force Windows into a continuous development state:
on your system and didn't install it for specialized software, it may have been included with a software crack or third-party emulator.
The Multikey driver was unsigned, using a leaked test-signing certificate or simply disabled DSE via bcdedit /set testsigning on . With 1803, Microsoft patched several workarounds (like the CVE-2015-0010 exploit used by tools like DSEFix ). Suddenly, loading an unsigned driver like Multikey required a full reboot into "Disable Driver Signature Enforcement" mode—a cumbersome and obvious red flag for malware. The release of Windows 10 version 1803 (April
A "patched" version was developed by the community to bypass these new restrictions, allowing the virtual USB driver to load correctly on newer Windows builds, including Windows 10 and Windows 11. Core Features of MultiKey 18.0.3 Patched
on drivers in Windows 10/11.
In the context of this discussion, MultiKey is not a simple application. It is a powerful, that operates at the core of the Windows operating system with the highest level of privilege (Ring 0). Its primary function is to emulate hardware USB dongles (also known as hardware security keys or "hardlocks"), which are physical devices used by software companies for copy protection.
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Below is an in-depth breakdown of why Windows 10 Version 1803 broke MultiKey, how the community "patched" and bypassed this restriction, and how to fix the remaining errors on modern systems. Why Windows 10 1803 Broke MultiKey Emulators
"Patchers" and "Cracks" are the most common vectors for malware distribution. Because these tools require administrative privileges to modify system files and registry keys, they have full control over the host machine.
To do this, the multikey.sys driver creates a virtual USB device in the system, tricking the application into thinking its physical dongle is still connected. Because it runs at the kernel level, this driver has deep, unrestricted access to the system, which is why it is caught in the crosshairs of modern security policies.
It is important to understand that using emulation software to bypass software licensing may violate the End User License Agreement (EULA) of the software you are trying to run.