As Rare continues to work on fixing the copious amounts of bugs and glitches currently plaguing the Sea of Thieves’ servers, one especially devastating bug remains unresolved: AllmondBeard, an error code that's robbing players not only of their progress but their hard-earned loot as well.
The AllmondBeard error occurs when a players connection to Xbox Live and/or the Sea of Thieves servers has been disrupted or dropped. Considering the many challenges Rare’s has faced while stabilizing the online multiplayer game’s network connectivity since launch, the error message is, unfortunately, a common occurrence among players.
Source : IGN.com