Restart your PC in Disable Driver Signature Enforcement mode. Alternatively, transition to the community-maintained branch called vJoy by UCR-Team which features updated digital certificates. 2. vJoy Device Not Showing in joy.cpl The driver may fail to initialize properly during boot.

Because vJoy 2.18 is not Microsoft-signed for production use, you have two options:

: vJoy device seems to be "owned" by another process and inaccessible. Solution : Open a Command Prompt as Administrator and navigate to your vJoy install directory ( cd C:\Program Files\vJoy ), then run the built-in tool: vJoyList.exe --verbose to see which process is the owner. You can then terminate that process in Task Manager or close the conflicting application.