The Sentinel Emulator 2007 relies on a modified system file (often hardlock.sys , snthardlock.sys , or multi-key driver mulkkey.sys ). These files were never officially signed by Microsoft or SafeNet. Since Windows Vista (and later versions), the kernel requires that all boot-time drivers have a valid digital signature from Microsoft’s Hardware Dev Center.
Enable Test Mode within the tool or via the command prompt instruction from Solution 2. Sentinel Emulator 2007 Error 1275