: The 2015 version improved the ability to link to online map data (like aerial imagery), with a new capability to capture and embed this data for offline viewing and plotting. Core 2015 Feature Improvements
That’s Autodesk’s Download Manager format. Run it, and it will pull the full installer from Autodesk’s CDN – but only if your session is authenticated. If not, it will fail. autocad civil 3d 2015 15 link
If you are a student or educator, check the Autodesk Education Community for specific legacy downloads. 2. System Requirements (64-bit) : The 2015 version improved the ability to