Multikey - 18.2.2

| OS Version | Support Status | |------------|----------------| | Windows XP (x86/x64) | Full compatibility | | Windows 7 (x86/x64) | Full compatibility (with UAC off) | | Windows 8/8.1 | Partial – requires signed driver mode off | | Windows 10 (1507 – 1607) | Works with TESTSIGNING on | | Windows 10 (1703+)/11 | Generally fails due to HVCI and memory integrity |

However, for 99% of users, especially those working with still-supported software, the legal and operational risks far outweigh the benefits. The driver is insecure, unmaintained, and incompatible with modern security features like Secure Boot and Kernel DMA Protection. multikey 18.2.2

: "Driver failed to start – Error 39" (Windows 10) Fix : Enable Test Mode ( bcdedit /set testsigning on ) and disable Secure Boot in BIOS. for 99% of users