Autocad 2013 — Vba Module 64-bit

Older VBA macros are a common vector for malware (e.g., the “AutoCAD ACAD.vlx” virus). With the 64-bit module, Autodesk introduced requirements. In AutoCAD 2013 SP2, macros must be digitally signed or the user must enable “Low security” (not recommended). Always sign your VBA projects using a code-signing certificate or the SelfCert.exe tool.