Patch File is called... "HH v0.16+ > v0.17 Patch" Instructions are as I wrote earlier and there is a README file in the Archive with more detailed instructions if need be.
As for the Quarantine... either your Virus scanner is a bit of a drama queen, or did you download from somewhere else and not itch.io? Never had my scanner hit on a file I downloaded from itch so far...
As for the game not opening, without knowing at least what the filename was, we can hardly recommend any course of action other than tabula rasa. Meaning clean slate, as in delete your game folder and download the full version.
Or you provide a bit of further information, maybe we can help if we knew what file got quarantined and for what reason.