When you're trying to join a friend's lobby in games like Sea of Thieves , Call of Duty , or Deep Rock Galactic , seeing the error "You'll need a new app to open this ms-xbl-multiplayer link" is a total mood killer. This message pops up because Windows doesn't know how to handle the specific "link" used by the Xbox network to connect players.
Surprisingly, if you have uninstalled the Xbox Game Bar, Windows may lose the ability to open multiplayer invites entirely. 3. Check Privacy & Subscription Settings ms-xbl-multiplayer fix