If you select Delay Frozen reboot to complete Windows updates (Advanced Options Tab in the Configuration Administrator)
and install Deep Freeze, the installer checks if all Windows updates are completed. If the Windows updates are not completed, Deep Freeze installation will not proceed. Complete Windows updates and try installing Deep Freeze again.
If you disable Delay Frozen reboot to complete Windows updates and install Deep Freeze, ensure that all Windows updates are completed without using Deep Freeze. Disabling this option may result in the computer being stuck in a reboot cycle due to incomplete Windows updates.