: When a player applies an official game update patch to a cracked game, the patch often overwrites the cracked steam_api.dll and steam_rld.ini with their original, authentic versions. This "repairs" the game back to its uncracked state, causing the game to look for a legitimate Steam installation and fail, throwing the error.
This is the unique Steam Identification Number for the game. Without the correct AppId , the game will not load or will try to launch the official Steam store. steamrldini