I think that's one you have to create specific to your machine after setup. I had the misfortune of dealing with this about a month ago on my dad's pc. Of course he didn't create one, but fortunately I understand his thought process, and was able to figure his p/w out from the info he gave me ( and of course he was ADAMANT that the pw he gave me was correct).
Hope you can get it figured out. I spent a good while researching, and couldn't find any viable workaround.

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