Traditionally, APPX data file verification and analysis are done from the command line, using the normal 'appx' engine itself. Since APPX for Windows is a GUI program, and the data file verification and analysis functions are text-based utilities, it is necessary to have a separate, alternate copy of the 'appx' engine which runs in text rather than GUI mode, in order to use those functions. This alternate version of APPX is called APPXUTIL.EXE.
Starting with APPX 3.3 and above, the data file verification (-v) function can be invoked from the database management menu, so it is not necessary to use APPXUTIL.EXE to access that capability. However, APPXUTIL.EXE is still needed by users of APPX 3.3 and above, to perform one of the two steps required for cross-platform data file import/export, and for detailed data file/key integrity analysis.
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