When you tried to launch the program, the following error message was displayed and the product would not run.
FATAL ERROR: Unhandled Access Violation Reading 0x0000 Exception at 4048b9h
This error message indicates that the program installation has become corrupted. To correct the issue, the software needs to be reinstalled. This error occurs when certain files become locked during the uninstall/reinstall process. To reinstall AutoCAD correctly
- On the Start menu (Windows), click Run (Windows 2000/XP) or StartSearch (Windows Vista).
- Enter acsignopt, and then click OK.
- Clear the Validate Digital Signatures and Display Special Icons option.
- Completely remove Autodesk software and reinstall as described in the following solution: Removing all Autodesk® software products from system to ensure a clean installation.