If you are trying to use a physical dongle on Windows 10, you should use the official Sentinel System Drivers rather than the emulator: : Get the latest Sentinel LDK Run-time Environment
Windows will boot normally, but will now allow unsigned drivers to run until the next full restart. sentemul2007 windows 10 64 bit
If you are bound to SentEmul2007 because of legacy software, your only options are: If you are trying to use a physical