You cannot simply delete d2xp-ix86-1xx-114d.mpq – the 1.14d Game.exe expects it. Instead, use a mod manager like Cactus or D2SE to run a separate 1.13c installation.
If you delete this file while running Diablo II v1.14d, the game will crash on launch. The executable has a hardcoded list of required MPQ archives. Removing d2xp-ix86-1xx-114d.mpq is like removing a brick from a house’s foundation.
: The .mpq (Mo’Paq) extension is a proprietary archive format used by Blizzard Entertainment to store game data, including graphics, sounds, and level data. Naming Convention : d2xp : Refers to Diablo II Expansion (Lord of Destruction).
: Standing for "Mo'PaQ," this is a proprietary data archive format used by Blizzard games (like Diablo, StarCraft, and Warcraft) to store graphics, sounds, and game data.
: It includes the necessary files to ensure the legacy game runs on modern Windows operating systems (like Windows 10) without needing third-party compatibility modes. The Phrozen Keep Common Issues