The ending PWZ denotes a PowerPoint Wizard. This file is a special version of a ppa add-in for the presentation software Microsoft PowerPoint. The PWZ files are structurally identical to ppa files, contain VBA (Visual Basic for Applications) and can be loaded at the start of PowerPoint.
AddIns extend PowerPoint with additional features, such as new features or the ability to run macros. The addins can be created by the user or come from other developers. Wizards guide the user through the application of a specific function or sequence of functions.
Most often resolving problems with opening PWZ files is very simple. Just install an appropriate program that supports such files. All of the listed programs support PWZ files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of PWZ 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 PWZ 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 Microsoft PowerPoint applications is not on the list, select "Browse" option in order to manually locate the directory where Microsoft PowerPoint has been installed.
Sometimes problems with opening PWZ files may not lie with the application itself, but can arise due to other causes, such as: