https://www.gamespot.com/articles/sea-of-thieves-launch-errors-cinnamonbeard-server-/1100-6457547/

It's release day for Sea of Thieves. Although it had a gradual rollout in various markets around the world, it's now available everywhere, and many players are reporting issues getting online to play on Xbox One and PC, among other problems. Rare has acknowledged the troubles and says it's working to resolve them.