Having problems opening a CNT file?

We have programs that can open or convert your CNT files.

Opening CNT files

Did your computer fail to open a CNT file? We explain what CNT files are and recommend software that we know can open or convert your CNT files.

What is a CNT file?

Files that contain the .cnt file extension are used by Microsoft Windows to index the help files that are used by the Windows operating system. These files can be created by the Microsoft Help Workshop application, a program that is used to develop help documentation for the Windows OS.

The actual help files that are used by this program are saved with the .hlp file suffix. The table of contents files that organize the HLP files are saved with the .cnt file extension. CNT files are optional files and not all Windows HLP files with have a CNT file associated with it.

Try a universal file viewer

Try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and most likely yours too. Download Free File Viewer here.

About File Extension CNT

File.org aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.

If you have additional information about the CNT file format or software that uses files with the CNT suffix, please do get in touch - we would love hearing from you.