[GIS] Opening MXD saved in one version using earlier version

arcgis-10.5arcgis-10.6arcgis-desktopmxd

Working in an enterprise system. We need to determine if everyone needs to update to 10.6 at the same time for mxd cross-compatibility or can we update from 10.5 as needed.

Best Answer

You need to save a copy of the mxd to an earlier version if you have saved the mxd in ArcGIS latest version 10.6.

Based on ArcGIS help: Saving a map:

New documents cannot be opened in earlier versions of the software; however, you can use the Save A Copy command to make a copy of a map document so you can open and work with it in previous versions of ArcGIS.