June 9, 2020 – Autodesk released Autodesk Civil 3D 2021.0.2 Hot Fix
The Autodesk Civil 3D 2021.0.2 Hot Fix is available via the Autodesk Desktop Connector app or via download from the Autodesk subscription site. The update requires access to the original install resources.
The Hotfix includes the previously release Autodesk Civil 3D 2021.0.1 Hot Fix which addresses an issue that caused Civil 3D 2021 to close unexpectedly when opening a drawing with a pressure network pipe run that contained curves.
Autodesk Civil 3D 2021.0.2 Hot Fix
The Civil 3D 2021.0.2 Hot Fix addresses a stability issue that occurred when opening a drawing that contained either unloaded or circular xrefs.
To resolve this issue, install Civil 3D 2021.0.2 Hot Fix and Autodesk Desktop Connector version 18.104.22.1683.
When opening certain drawings from BIM 360 using Desktop Connector, the following error message may be displayed:
"The process cannot access the file because it is used by another process."
This error may occur if a drawing contains circular or duplicated references, and may result in broken links to the referenced drawings.
If you see this error message when opening a drawing, resolve any circular or duplicated references in the drawing when possible and save the drawing.
See the Hot Fix Release Notes in the Civil 3D 2021 help