Do I need a Xbox One to play ¨Xbox Play Anywhere¨ games on PC.

The short answer is no. You can not play a PC version of a game on the Xbox One S. You need the Xbox One version of the game to play on the Xbox One. There are lots of games that are on both PC and Xbox One, and some are

play anywhere.

Unfortunately no. You would need to purchase the PC version of the game in order to play on PC.

Some games are considered Play Anywhere meaning you can buy the Xbox or PC version digitally and play it for free on the other, but Minecraft is not one of those games. https://www.xbox.com/games/xbox-play-anywhere?xr=shellnav

You don't.

XPA games can be acquired on either platform once (provided you use the same account) and be played from either PC or Xbox One using the same game save etc that is stored in cloud

O Game Pass é destinado ao Xbox One, não ao PC. Todos os jogos disponíveis como títulos do Play Anywhere para o que também estão no Game Pass podem ser jogados no PC. Como Outlast não é um título do Play Anywhere, ele não funcionará no PC através do Game
Pass.

[Translation]

The GamePass is for the Xbox One, not the PC. All games available as Play Anywhere titles for what is also on the Game Pass can be played on the PC. Because Outlast is not a Play Anywhere title, it will not work on the PC through GamePass.

Hello.

So I'm assuming this is a play anywhere game.

You can not play a play anywhere game on both PC and Xbox at the same time, on the same account.

What you need to do is set the Xbox One console you want to be able to play the game as the account's (that owns the game, unless you have a disc copy) home Xbox, then sign into the game on the Xbox with a different account, then you can sign in on PC with
the account that has the digital rights to the game and then you will be able to play on PC and Xbox One simultaneously.