If you are running AutoCAD 2015 or 2016 on Windows 11, the 64-bit version of acismobj20.dbx is known to be unstable due to recent Windows updates.
A cold draft hit her face. The monitor bezel grew frost. autocad fatal error acismobj20dbx free
Old temp files often cause access violations. If you are running AutoCAD 2015 or 2016
Sometimes the file exists, but Windows has "forgotten" how to use it. Close AutoCAD. Press Win + R , type cmd , and press Enter. autocad fatal error acismobj20dbx free
Try these steps first to see if the software can be recovered without a full reinstallation: Reset Settings to Default: