The acui24.dll file is a critical User Interface library for AutoCAD that manages visual elements like ribbons, toolbars, and context menus . This specific version (24) is typically associated with the AutoCAD 2021 engine, but it is often required by newer versions or plugins that rely on that specific UI framework .
Corrupted Installation: The file may have been incorrectly installed or accidentally deleted. autocad 2023 acui24.dll
NETLOAD Command: Use the NETLOAD command within AutoCAD to manually load DLL files. The acui24
Some custom LISP routines, ARX applications, or add-ons (e.g., for civil or mechanical tool sets) attempt to call outdated versions of acui24.dll from previous AutoCAD releases, leading to version mismatch errors. If none of the above steps resolve the
: Sometimes security software mistakenly flags DLLs as threats. Check your antivirus "Quarantine" or "Protection History" to see if acui24.dll was recently removed and restore it if necessary. Run System File Checker (SFC)