: Corrupted user profiles or registry settings often trigger fatal errors. Use the Reset Settings to Default tool found in your Windows Start menu under the Autodesk folder.
Open Command Prompt as Administrator. Navigate to the AutoCAD folder: autocad fatal error acismobj20.dbx
For architects, engineers, and designers, few sights induce as much dread as the greyed-out screen and the pop-up that reads: : Corrupted user profiles or registry settings often
This article is accurate for AutoCAD versions 2010 through 2025. For version-specific variations of the error (e.g., acismobj21.dbx, acismobj22.dbx), the same solutions apply—simply replace the filename accordingly. autocad fatal error acismobj20.dbx