ZIPX identifies so-called extended zip files, ie extended zip files. This format was introduced in version 12.1 of Corel Winzip and includes more advanced compression techniques such as BZip, LZMA and PPMd as well as data type optimized algorithms for Jpeg images and Wav audio files.
The use of these methods usually results in a smaller archive file, but more often also in a higher packing and unpacking time. In contrast to the open source format zip, ZIPX is a proprietary format that has been licensed by relatively few other programs to date.
It should be noted that at least ZIPX files can only be opened by a few programs so far. However, the demo version of WinZip should suffice for uniquely unpacking a ZIPX file. Other program may be subject to restrictions.
Most often resolving problems with opening ZIPX files is very simple. Just install an appropriate program that supports such files. All of the listed programs support ZIPX files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of ZIPX files or offer file conversion options, but may not be capable of editing such files.
It is possible that although a compatible program has been installed on user’s system, it is not used by the system to open it. This may happen because no default application was associated with this type of files. To associate ZIPX files with given application, select "Open with" from drop-down menu (accessed by right-clicking on the file). Then select from the list the program or application you want to be used to open this type of file. If the WinZip applications is not on the list, select "Browse" option in order to manually locate the directory where WinZip has been installed.
Sometimes problems with opening ZIPX files may not lie with the application itself, but can arise due to other causes, such as: