To download ArcGIS Desktop 10.8.2, you must access the My Esri customer portal. This is the only official and secure method to obtain the setup files for the final release of the legacy ArcMap suite. Official Download Procedure
Conclusion and Final Thoughts
Select ArcGIS Desktop: Search for "ArcGIS Desktop" in the product list. download arcgis desktop 1082 link
Permissions: Your account must have "Download Software" permissions granted by your organization's administrator. To download ArcGIS Desktop 10