can't comment because stackoverflow/stackexchange/superuser/etc are all different systems and my rep is sometimes too low to comment. however, please read:
For anyone that is having issues with a power setting in windows being re-enabled after an update (or worse, every reboot due to some sneaky M$ application that hates us all), we have the power and final say. In my case, I am having the dreaded "Windows updates/reboots but gets stuck in hybrid sleep and can't leave BIOS splash screen without manual shutoff using power button". The solution was to disable both Hibernation AND Fast Boot. Problem is, these settings could technically be re-enabled by an update, which makes my PC hang again if I am away during an update (and subsequent auto-reboot). My approach is to just accept that M$ wants to screw everything up from time to time without actually fixing it...and go around them.
I created a batch script that runs the powercfg /H OFF command, then give a copy of that script to the GPM Shutdown Scripts folder (making it owned and run by administrator), and adding that script to the list of scripts to be run at system shutdown.
If anything re-enabled hibernation/fast-boot, simply going through the ACPI shutdown procedure just causes it to get disabled again just before flipping over the power state (regardless if anyone was logged in, and regardless of a restart or a full shutdown).
Once you verify that the Hibernation & Windows Fast Boot options no longer appear under advanced power settings (Control Panel\Hardware and Sound\Power Options > Choose what the power buttons do - Shutdown settings), you can use whatever measure you like to manually delete the Hiberfil.sys to reclaim disk space.