Can't install Children of Morta on Xbox Game Pass for PC

This link should be able to get you the support you need regarding this error. https://beta.support.xbox.com/help/errors/error-code-0x803F8001

I guess it may be due to the fact that it was just added to game pass and may have still some issues because of that.

Having the same issue, I tried this but the game still gives the same error.

The issue was reported also on the XboxGamePassPC twitter account in response to the announcement and they replyed about one hour ago that they were actually working on a fix, so I do believe it is just a matter of time to have it fixed.

It is in the comment section: https://twitter.com/XboxGamePassPC/status/1217827167368691712

Same problem. I try all the solutions in whole internet and don't work.

Please don't put random solutions, the guy who creates the answer said "This error is for only this game. I can install other games" So don't put solutions like "You can try cleaning the Windows Store cache, just press the
Windows Key + R, and type wsreset and try again" Its evident not works. Please read the mesages firts and try to understand.

Thanks