There's a MS rewards quest for Sims 4, so I tried downloading it on PC (I figured it wouldn't work, usually these quests are console only), but I still wanted to try. Long story short, I had to reinstall the EA app because it got stuck downloading the game and was unable to cancel or finish, not even after app/PC restart. And the quest didn't work.
Here's another funny story. There are usually sets of quests called "punch cards" in MS Rewards too, complete them all, you get a bunch of points. EZ.
So I do this one in the desktop rewards site and it launches/does a search in the xbox app PC. It applies search filters like 'newly added games', Bethesda's catalogue or EA's, etc. For some weird reason, going to the rewards site, clicking in the link that opens the xbox app and does a search is much faster than opening the app and browsing by hand.
PC launchers, huh...