Most DLLs are built using Microsoft Visual Studio. If your Windows installation is missing the specific "Redistributable" package the DLL was compiled with, it won't initialize.
tools) cannot properly load the library file responsible for handling Bosch EDC17 engine control units Primary Causes & Fixes error at initialization of bundled dll edc17dll
EDC17-related tools often have strict operating system and permission requirements: Most DLLs are built using Microsoft Visual Studio