To prepare a Horizon 8 desktop to use a start session script, you must enable the VMware Horizon View Script Host service and add entries in the Windows registry.
You must configure all Horizon 8 desktops that need to run start session scripts. Horizon 8 does not provide a mechanism to propagate registry changes, VMware Horizon View Script Host service configuration changes, and start session scripts to multiple Horizon 8 desktop virtual machines.