If you have access to any version of Land Desktop (even 2005), export your project as LandXML 1.2 . Civil 3D 2025 imports this perfectly. No need for the 2009 Companion.
Autodesk ended offline activation for many legacy products in 2019. If you are installing this as a new instance on a new machine, you may encounter difficulties re-authorizing the license even with a valid serial number.
If you have access to any version of Land Desktop (even 2005), export your project as LandXML 1.2 . Civil 3D 2025 imports this perfectly. No need for the 2009 Companion.
Autodesk ended offline activation for many legacy products in 2019. If you are installing this as a new instance on a new machine, you may encounter difficulties re-authorizing the license even with a valid serial number. autocad civil 3d land desktop companion 2009 download top