CUI File - opening and understanding

Did your computer fail to open a CUI file? We explain what they are used for and recommend software that we know can open or otherwise handle your .CUI files.

What is a CUI file?

A .CUI file is an AutoCAD Custom User Interface file. Through our analysis of CUI files, we know that one use of the format is AutoCAD Custom User Interface. We have not yet described in detail what these files contain and what they are used for, but our team is working tiredlessly through thousands of file formats. We'd love hearing from you if you have information about the format.

How to open CUI files

You will need a program compatible with the specific file you are trying to open, as different programs may use files with file extension CUI for different purposes.

We have not yet verified any programs for Windows that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!

Suggest another file format using extension CUI

While we know of one file format using the .CUI file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .CUI file.