Esri wants you to move to Pro.
Run the Installer: Locate the downloaded .exe file and run it. The installer will first extract the files to a destination folder. download arcgis 10.6
ArcGIS 10.6 comes in two common setup types: Esri wants you to move to Pro
Here’s a clear, informative text you can use for a blog post, tutorial, or internal guide on downloading ArcGIS 10.6: download arcgis 10.6