Can I load a GeoJSON (.geojson) file from the portal into ESRI's ArcGis 10.x software?
It is not possible to directly load a GeoJSON file in ArcGIS 10.X, as this version does not natively support this format. To work with the data, it is required to use other formats available in the portal, such as GeoPackage (.gpkg), which is fully compatible with ArcGIS 10.x and can be managed as a geodatabase.