I have not opened an mpkx file. Is this a 2D or 3D file. I am guessing that it is a compressed ArcGIS file of some type. It does not show up as an option in ArcGIS or QGIS.
Can someone suggest how to open this?
File Formats – What is an .mpkx File and How to Open It
file formats
Best Answer
.mpkx are ArcGIS Pro Map packages files. If you have ArcGIS Pro then the instructions on how to Import an ArcGIS Pro map package are available in the help file.
If you are using QGIS, then you can unpack the file with 7zip and at least get the data. However QGIS can't directly read the maps and layouts.