: Controls like TreeView, ListView, ImageList, Slider, and ImageComboBox from the MSComCtl library may not work in 64-bit AutoCAD.

: Windows 7, Windows 8, or Windows 10 (64-bit architectures only).

Autodesk shifted its primary development focus toward the more robust .NET Framework (VB.NET, C#) and ObjectARX. However, to support millions of lines of legacy enterprise macro code, Autodesk introduced the standalone VBA Enabler module. For AutoCAD 2013, this module delivers an isolated 64-bit VBA 7.1 environment that interfaces directly with the 64-bit AutoCAD object model. Prerequisites for Installation

Before AutoCAD 2010, VBA was included in standard installations. However, starting with AutoCAD 2010 and including version 2013, Autodesk removed VBA to reduce the installation size and increase flexibility. Consequently, to run any VBA code, you must manually download and install a separate "VBA module".