Error: Internal error occurs during pre-upgrade checks. Resolution: Send upgrade log files to VMware technical support team
2016-11-22T22:52:37.764Z ERROR transport.guestops Failed to create temp file on target xx.xx.xx.xx: (vim.fault.RestrictedVersion) {
dynamicType = <unset>,
dynamicProperty = (vmodl.DynamicProperty) [],
msg = 'Current license or ESXi version prohibits execution of the requested operation.',
faultCause = <unset>,
For vCenter Server Appliance 7.0 see: Upgrading to VCSA 7.0 fails "Internal error occurs during pre-upgrade checks"