Managed .NET applications are often associated with corporate and third-party applications that extend the behavior and capabilities of the AutoCAD-based product.
When migrating to the latest release, not all .NET applications might work. Compatibility for .NET applications is subject to change between releases to take advantage of the latest .NET Framework and additions to the AutoCAD Managed .NET API.
The following table lists the Managed .NET SDK versions that are supported by AutoCAD-based product release and the .NET Framework that is supported.
| Release | Release Number | Supported .NET SDK | .NET Framework |
|---|---|---|---|
| AutoCAD 2020 | 23.1 | AutoCAD 2020, AutoCAD 2019 | 4.7 |
| AutoCAD 2019 | 23.0 | AutoCAD 2019 | 4.7 |
| AutoCAD 2018 | 22.0 | AutoCAD 2018 | 4.6 |
| AutoCAD 2017 | 21.0 | AutoCAD 2017 | 4.6 |
| AutoCAD 2016 | 20.1 | AutoCAD 2015, AutoCAD 2016 | 4.5 |
| AutoCAD 2015 | 20.0 | AutoCAD 2015 | 4.5 |
| AutoCAD 2014 | 19.1 | AutoCAD 2013, AutoCAD 2014 | 4.0 |
| AutoCAD 2013 | 19.0 | AutoCAD 2013 | 4.0 |
| AutoCAD 2012 | 18.2 | AutoCAD 2010, AutoCAD 2011, AutoCAD 2012 | 3.51 SP1 |
| AutoCAD 2011 | 18.1 | AutoCAD 2010, AutoCAD 2011 | 3.51 SP1 |
| AutoCAD 2010 | 18.0 | AutoCAD 2010 | 3.51 SP1 |
| AutoCAD 2009 | 17.2 | AutoCAD 2007, AutoCAD 2008, AutoCAD 2009 | 3.0 |
| AutoCAD 2008 | 17.1 | AutoCAD 2007, AutoCAD 2008 | 2.0 |
| AutoCAD 2007 | 17.0 | AutoCAD 2007 | 2.0 |
| AutoCAD 2006 | 16.2 | AutoCAD 2005, AutoCAD 2006 | 1.1 SP1 |
| AutoCAD 2005 | 16.1 | AutoCAD 2005 | 1.1 |
Changes to the Managed .NET SDK can be found in the What’s New and Migration Guide section of the Managed .NET Reference Guide (<drive>:\<objectarx install folder>\docs\arxmgd.chm).