Because this software is from 2007, date-based licensing checks may fail. If you see an "expired" error:
To resolve these issues, you can try the following: Autocad 2007 Portable Windows 7 23
While AutoCAD 2007 was originally designed for Windows XP and 2000, it can run on Windows 7 with a few adjustments: DWG (AutoCAD Drawing) Format Family - Library of Congress Because this software is from 2007, date-based licensing