vmware tools install upgrade error how to force uninstall

force uninstall of vmtools / vmware tools

mount the vmtools cdrom in the vm using VM -> Guest -> Install / Upgrade VMware Tools - choose interactive install

from the VM command prompt cd to the cdrom drive and run the command
setup64 /c
this does the uninstall - no reboot needed

then run setup64 (from gui) to reinstall
error when trying to upgrade = isolation.tools.guestInitiatedUpgrade.disable = "FALSE"