Autodesk Civil 3D 2021.3.4 Update

The Autodesk Civil 3D 2021.3.4 Update is available via the Autodesk Access app or via download from the Autodesk subscription site.

The update requires access to the original install resources.

Official release date was Apr 11, 2023.

The Civil 3D 2021.3.4 Update includes the fixes in all prior updates to Civil 3D 2021 and can be installed on any prior version of Civil 3D 2021. If you uninstall Civil 3D 2021.3.4, the prior version of Civil 3D 2021 that you had installed will be restored.

Autodesk Civil 3D 2021.3.4 Update

Civil 3D 2021.3.4 Update adds support for layer refresh in the Connector for ArcGIS for Civil 3D.
The Connector for ArcGIS for Civil 3D 2024 added support for importing layers as AutoCAD objects and layer settings to apply stylization and custom object assignment based on the query.

This update enables compatibility with the assignments made in Civil 3D 2024 to be maintained when layers are refreshed in Civil 3D 2021.

This update also resolves several known issues related to import performance, pressure networks, and more.

Fixed Issues

Autodesk Connector for ArcGIS

Civil 3D 2021 added support for layer refreshes in the Autodesk Connector for ArcGIS. Civil 3D 2024 added support for importing ArcGIS layers as AutoCAD objects and layer settings to apply stylization and custom object assignments based on a query. With the changes in Civil 3D 2024, a stability issue would occur when a drawing that had imported ArcGIS objects was saved and opened in Civil 3D 2021 through Civil 3D 2023 and the ArcGIS layer was refreshed in the Data Source Manager. This update fixes the stability issue for Civil 3D 2022 and enables the layer setting assignments made in Civil 3D 2024 to be maintained when layers are refreshed in Civil 3D 2022.

Importing an ArcGIS point layer with 1,000 objects into Civil 3D as COGO points takes approximately 8 seconds. However, refreshing a simple change from ArcGIS could take more than 4 minutes. This issue would occur in Civil 3D 2021 through Civil 3D 2024. This update improves the refresh time in Civil 3D 2022 so that refreshing data will take a similar time as importing data.

Data Shortcuts

Fixed a stability issue that would occur when switching between different drawings associated with different data shortcut project folders.

Pressure Networks

Added the ability to select the pipe run alignment from a dialog box when relinking pipe runs.

Read the Civil 3D 2021.3.4 Update Notes in the Civil 3D 2021 on-line Help