Hello guys,
If you got the game installed and you already played it but now you can't having the error code 0x803F8001 (that happened to me), follow this instructions and I hope this will be fixed!
1.- Go to "add or remove programs"
2.- Write in the search bar "sea of thieves" and you should see 2 icons -> https://gyazo.com/229b8b9221af575ae1ac77c2055392c3
3.- Uninstall the SMALL ONE https://gyazo.com/e8d4899a5ceb76b5f3bd1c83d67c1644
4.- Launch the game throw "Xbox application", and it will say that your account is not allowed to play (or something like that)
5.- Click on "watch on the microsoft store" https://gyazo.com/4134d8d14a00175d11802076d8a5f422
6.- You will be able to "install" the "game" again, install it, shouldn't take more than 30 seconds.
7.- Once it's installed, go back to the xbox software as usual and press "play"
It should works.
I was desperate trying to find solutions on internet but nobody gave me any good solution, so I tried to do this and it worked. Once it worked I came back as fast as I could to try to help people with the same issue, hope that helps you like it helped me.
I'm not a dev or anything, I'm just a normal user that found a possible solution.
Good luck.
