SoftEther VPN User Forum

I installed SoftEther VPN Client on Windows 10 on VirtualBox. It worked fine. Today I added a ramdisk to VirtualBox as a shared folder and moved all temp folder to the ramdisk (Change all temp/tmp environment variables to the new folder). Then SoftEther VPN Client service no longer starts. Does anyone have any idea why and how to fix it ?

Best regards,
tono777