Install Arcgis 10.8
before starting a fresh 10.8 installation to avoid registry conflicts. Activation : After the software files are installed, you must use the ArcGIS Administrator
Here’s a clear, step-by-step write-up for installing ArcGIS Desktop 10.8 (the final release of the classic ArcMap interface). This guide assumes you have a valid license from Esri or an authorized distributor. install arcgis 10.8