Fatal Error: Unhandled Illegal Access Read Exception 0x0000 or Unhandled Exception e0434352h When Starting AutoCAD

Issue:

When attempting to launch an AutoCAD product, the program crashes and displays a fatal error message similar to one of the following:

• AutoCAD Error Aborted Fatal error: Unhandled illegal access read exception 0x0000 occurred in …
• AutoCAD Error Aborted Fatal error: Unhandled exception e0434352h occurred in …
• 

Solution

To resolve this issue, reset AutoCAD to its default settings by managing user profiles within AutoCAD.

1. Launch AutoCAD.
   • Note: If AutoCAD crashes immediately upon launch, attempt to open it by double-clicking a DWG file or by running it with specific switches (e.g., /s for safe mode if available, or temporary disabling certain features) to access the command line.
2. At the command line, type OP and press Enter to open the Options dialog box.
3. Go to the Profiles tab.
4. Select the <<Unnamed Profile>> or the profile that is currently active.
5. Click Reset.
6. Click Set Current to make the reset profile active.
7. Click Apply, then OK to close the Options dialog box.