The base CODEX release is for offline play. To enable multiplayer, users often apply a separate "Online-Fix" (often by 0xdeadc0de ) which involves copying files into the game directory and running Steam in the background.
15.11.01 (corresponds to the final major update for Monster Hunter: World ). Content: Includes the base game and the Iceborne expansion.
The file is the fourth segment of a multi-part compressed archive containing the "Master Edition" of Monster Hunter: World - Iceborne , specifically version 15.11.01 , released by the scene group CODEX around June 2021. File & Release Overview