Sometimes McAfee products causes more grief than joy. For some mysterious reason, some, if not all, McAfee products interfer with the handling of VBScript as they register their own .dll file for handling VBScript.
Not all attempts at manually correcting the Windows Registry prove successful.
In most cases McAfee Consumer Product Removal tool are able to remove the last traces of the McAfee products previously or currently installed, enabling Autodesk software to complete their activation ritual.
I’m also pointer fingers at Autodesk for chosing an activation scheme based on Internet Explorer technology, VBScript, and, JScript, where a simpler approach would more than suffice.