On your problematic computer, close all Autodesk applications.
When the Autodesk installer window appears, click and follow the on-screen prompts. Restart your computer once completed. Step 3: Reinstall Microsoft Visual C++ Redistributables
Paste the copied file into the exact same directory: C:\Program Files\Autodesk\AutoCAD 2023\ If prompted, click . 4. Re-register the DLL via Command Prompt
Sometimes, necessary C++ redistributable packages that support acui24.dll are missing. Go to . Click Check for updates and install all available updates. 4. Run System File Checker (SFC) autocad 2023 acui24.dll
Download a fresh installer package from your Autodesk Account portal. Disable your antivirus temporarily during installation. Install AutoCAD 2023 and apply the latest service packs. Preventive Measures
Delete the remaining Autodesk folders in C:\Program Files\ and C:\AppData\ .
An older version of AutoCAD or an incompatible plugin tried to overwrite this specific 2023 version file. How to Fix acui24.dll Errors in AutoCAD 2023 The most common triggers include:
: Antivirus software flags the DLL file as a false positive and quarantines it.
Because acui24.dll is an essential part of the installation package, the most effective solution is often to repair or fully reinstall the software to ensure the file is present and intact. Navigate to . Find AutoCAD 2023 and select Uninstall/Change .
: Always install AutoCAD updates and hotfixes directly through the Autodesk Access app to prevent version mismatches. Some custom LISP routines
When searching for acui24.dll , you will find dozens of websites offering free downloads of individual DLL files.
Use the Autodesk Clean Uninstall tool to remove all traces of the previous installation.
Some custom LISP routines, ARX applications, or add-ons (e.g., for civil or mechanical tool sets) attempt to call outdated versions of acui24.dll from previous AutoCAD releases, leading to version mismatch errors.
The most effective solution for missing DLLs is repairing the installation, which restores missing or damaged files. Open the Windows > Programs and Features . Select AutoCAD 2023 from the list. Choose Uninstall/Change .
Before applying fixes, it helps to understand why this specific error occurs. The most common triggers include: