Here is what you need to know about accessing and using this legacy software. ⚠️ Important Warning on Third-Party Downloads
If your goal is simply to open or convert 2009-era Land Desktop or Civil 3D data, consider these updated legal paths: Here is what you need to know about
Autodesk discontinued all sales, downloads, and activation support for 2009 products after March 2019. You cannot get a legal new license. However, existing license holders can access archives. However, existing license holders can access archives
October 26, 2023 Subject: Download Availability, Software Status, and Modern Alternatives 2023 Subject: Download Availability
AutoCAD Civil 3D Land Desktop Companion 2009 Update 3 Readme
This version is nearly 15 years old, and using outdated software can pose security risks, compatibility issues with modern operating systems, and legal concerns unless you already have a valid perpetual license from that era.