'As a result of this fix, players who were affected by this bug will have all of their squad data reset.
Monster Hunter World's Xbox One version hasn't been without its own issues related to online play. To make up for earlier problems, the pack will now be available until February 22, 23:59pm (UTC). Slicing ammo has been reduced, as well as its effect when it hits other players. "Please wait and try again". Additionally, players in squads whose squad leaders have their data reset will also see any affiliated data disappear the next time they log in'.
Shortly after Monster Hunter World's arrival, many Xbox players began reporting that they would receive an error message whenever they attempted to find and join a multiplayer session.
Fixes regarding the decorations that were lost and the issues with selection of items has been taken care off.
There's also fixes for decorations that would go missing from weapons, an issue with selecting items via the Sell Items tab inside base camp tents, as well as changes to the Light Bowgun and Heavy Bowgun's ammo.
Increased the power of Normal Ammo (1, 2, 3), Pierce Ammo (1, 2, 3), and all elemental ammo (except Dragon Ammo). Players can only carry 30 Slashberries in their item pouch from now on. Players can still use any remaining extra Slashberries if they now have more than 30 in their item pouch.
Monster Hunter: World delivers a seamless gameplay experience allowing players to move freely across map areas that comprise the living ecosystems and dynamically transition from day to night. And the sales figure includes sales from platforms PS4 and Xbox One. We apologize for the delay and appreciate your continued patience and support as we track down and solve these issues.
Another solution, according to Capcom that found out what other players have tried to do, is to set the NAT connection settings to "Open" on the Xbox One.
Non-squad members will no longer be able to join Squad online sessions unless they have a friend invite or an online session ID search.