Xbox Windows 10 App + Game Pass

So on your PC you need to make sure the
game pass ultimate account is signed into the
Microsoft store app, You might want to try installing the
xbox(beta) app on windows as well and try downloading from there.

Not all of the game pass games between Xbox and PC are the same, the xbox(beta) app will show you all the available and installed windows game pass games

US xbox(beta)

CAN xbox(beta)

For you use the Game Pass on PC with Windows 10, try this steeps:

1 Open the Xbox(beta) App [the Game Pass run for this App and then;

2 Try run the Game

Hi. Is the error only happening to just the app or Windows 10? I would try uninstalling and reinstalling the Xbox Game Pass app. See if that works.

Hi. I got the error trying to update my Windows 10.

Xbox Game Pass Ultimate member, you can find your perks on your console within the Xbox Game Pass tab, in the new Xbox (beta) app on Windows
10 PC, or within the Xbox Game Pass mobile app. And as Zenosos said Pso2 is Na and Canada only

The best place to see available titles for Game Pass for PC would be
the Windows 10 store app "Xbox" here. Otherwise you'd have to search the Windows 10 store individually for titles in the Game Pass subscription and install from there. The App is the place to see all available titles for download.