Due to its dependency to VirtualBox, only an administrator or user with elevated rights account can install and use Genymotion Desktop on a Windows workstation. Standard user accounts cannot install nor use Genymotion Desktop.
Make sure that your user account is allowed to have elevated rights.
If you are working in a company, contact your IT security team and make sure your user account is allowed to have elevated (admin) rights. If your company IT service does not allow it, then Genymotion Desktop is not suitable to your company IT environment.