After applying Try&Decide changes reboot the computer before creating Acronis Secure Zone with allocating space for it from system partition
This article applies to:
When you select to apply the Try&Decide changes without rebooting, the feature is formally not deactivated.
Try&Decide gets fully deactivated (if you turn it off) on the first reboot, which is required to fully restore the initial MBR. If creation of Acronis Secure Zone requires a reboot and is also scheduled on the same reboot as the deactivation of Try&Decide, then the latter operation will override the former and creation of Acronis Secure Zone will fail.
Create Acronis Secure Zone after rebooting the machine.
In future there will be implemented a notification that a system restart is required if you are going to create Acronis Secure Zone after applyng Try&Decide changes without a reboot.