It is important to clarify upfront: “autocad2015englishwin64bitdlmsfx.exe” is not a generic keyword but a specific filename. This string refers to the self-extracting executable (SFX) for the 64-bit English version of Autodesk AutoCAD 2015, bundled with the Download Manager (DLM) component.
SFX (Self-Extracting) Executable. This file is a compressed archive that, when run, extracts the actual installation files to a temporary folder (usually C:\Autodesk ) before launching the setup wizard. Distribution: autocad2015englishwin64bitdlmsfxexe
It sounds like you’re asking for a detailed technical explanation of a specific filename: Update to latest AutoCAD 2015 updates (if available