: Enter your authorization code provided by Esri. If using a Concurrent Use license, enter the name of your license manager. Enable Extensions : Once ArcMap is open, go to Customize > Extensions
: Ensure any specific extensions (like Spatial Analyst or 3D Analyst) are checked during the authorization process to enable their tools. Common Post-Installation Tasks install arcgis 108
You cannot download ArcGIS 10.8 from a generic software archive. It is a licensed commercial product. Legitimate sources: : Enter your authorization code provided by Esri