To download the VMCI Device Driver by installing VMware Tools on a ESXi Host, start by selecting the custom download option. If you need to make any edits to the .vmx file, do those before continuing with the installation. Save the file after editing it. For a virtual machine in Windows, enable the VMCI driver and proceed with the installation wizard. For a virtual machine in a Linux environment, choose vmware-config-tools.pl script with the experimental option. Choose “yes” to thave the VMCI driver installed. You may need to restart your machine before you can use the VMCI.