: Older 64-bit AutoCAD versions (e.g., LT 2015) can struggle with recent Windows 11 updates.
Type regsvr32 AcIsmObj20.dbx (Note: You may need to provide the full file path, usually found in C:\Program Files\Autodesk\AutoCAD 20XX\ ). Conclusion autocad fatal error acismobj20dbx free
: If the error persists across all files, your AutoCAD profile may be corrupted. Use the Reset Settings to Default tool found in your Windows Start menu under the AutoCAD folder. : Older 64-bit AutoCAD versions (e
