What is a CXC File? Did you find a CXC file on your computer and wonder what program should open it? Maybe someone emailed you a CXC file but you’re not sure how to use it. Perhaps you tried to open the CXC file but Windows told you that it could not open it. Before you can open a CXC file (assuming it’s even a file format that’s intended to be viewed or edited), you’ll need to determine what kind of file the CXC file extension refers to. Answer: A file with the CXC file extension is a Custody X Change Data file. A CXC file might also be related to a custom FAT-26 partition used by Sony Ericson. Other types of files may also use the CXC file extension. If you know of any additional file formats that use the CXC extension, please let me know so I can update this information. How to Open an CXC File: The easiest way to open a CXC file is to double-click on it and let your PC