A cmx file extension is related to the patch files used by some apps. Probably obsolete.

There are 4 other file types using
the CMX file extension!

cmx icon.cmx - Apple Viewer data

cmx icon.cmx - Corel Presentation exchange image

empty icon.cmx - Qualcomm CMX ringtone

empty icon.cmx - The Sims 3D body mesh data file

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CMX file extension - Patch

What is cmx file? How to open cmx files?

File type specification:

Various data file type icon Various data file type

The cmx file extension was also reported of being used for some sort of applications patch files.

Most likely some old format without support. No further information could be found.

This cmx file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.

Help how to open:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert:

As far as we know, this .cmx file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

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