On Vista, I believe they have programmed it to not allow losses.
“For a “standard” game of Klondike of the form (Draw 3, Re-Deal Infinite, Win 52) the number of solvable games is 66.875%. The number of unplayable games is 0.025% and the number of games that cannot be won is 33.1%. Note – these results are based on a mathematical theory that is speculative and not proven. [1]
“Unplayable” means that no cards can be moved – anywhere. As opposed to a game that has been “lost” with 0 cards to the suit stacks. In which case some cards can be moved just not to the suit stacks. A game that has been won, in this case, has 52 cards placed to the suit stacks. So you have unplayable, lost and won games.[2]”