Install the latest AutoCAD 2023 Updates from Autodesk Desktop App. Service packs often include DLL stability fixes.

The most reliable way to restore missing internal components is through the Autodesk Maintenance Mode : Open the > Programs and Features . Select AutoCAD 2023 from the list. Click Uninstall/Change , then select Repair or Reinstall . Choose Reinstall to ensure all core files are replaced. 2. Restore from Quarantine

acui24.dll 是 Autodesk 公司为 AutoCAD 2023 版本开发的一个动态链接库（Dynamic Link Library，简称 DLL）文件，是该软件用户界面（UI）系统中不可或缺的核心组件之一。文件名中的 acui 代表“AutoCAD User Interface”（AutoCAD 用户界面），而 24 则明确指向其所属的 AutoCAD 版本——2023 版（Autodesk 产品的版本号 24.0 对应 2023 版本）。它主要负责处理 AutoCAD 软件中的各种图形用户界面元素，例如菜单、工具栏、对话框以及其他需要与用户进行交互的视觉组件，是保障软件 GUI 正常运行的基石。

To check if your acui24.dll is genuine:

Before downloading anything, look in your Recycle Bin. If you recently deleted the file by mistake, you can simply right-click and restore it.