Avoid third-party "crack" sites. The official repository is often hosted on GitHub or the developer’s personal site. Look for the signed executable. The SHA-256 hash should be verifiable.
: Use tools like Driver Signature Enforcement Overrider (DSEO) to manually sign the MultiKey.sys file located in C:\Windows\System32\drivers\ .
Use the [APP] directive to make remaps application-specific. Example: [APP=notepad.exe] Caps Lock::Ctrl (Edit the script file manually — the GUI is limited.) multikeysys windows 11
These tools are rarely open-source or vetted. Because they require "Administrator" privileges to modify system files, they have full control over your PC. Malicious actors often bundle malware, spyware, or trojans (such as coin miners) inside these activators.
The Multikeysys Signal
, which are designed to block vulnerable or unsigned drivers from running. MultiKey.sys
: Since the driver is unsigned, you must enable Test Signing by running bcdedit -set TESTSIGNING ON in an administrative Command Prompt. Avoid third-party "crack" sites
: A lightweight open-source tool that modifies the Windows Registry directly. Unlike MultiKeySys, SharpKeys requires no running background processes and works at the deepest system level. Supports all Windows versions including Windows 11.
Windows Security may automatically delete the file, causing your professional software (e.g., MIDAS Civil or SOLIDWORKS) to stop working. How to Fix MultiKey Errors Check Device Manager: The SHA-256 hash should be verifiable
Any you are currently seeing in Device Manager Share public link