Avaya Aura® Web Gateway Release 10.2.x does not support VMware ESXi versions 6.0 and 6.5. Therefore, if you use VMware ESXi version 6.0 or 6.5, you must upgrade it to version 6.7 or later before migrating Avaya Aura® Web Gateway to Release 10.2.x. For information about upgrading VMware ESXi, see the official VMware documentation.