& Construction

Integrated BIM tools, including Revit, AutoCAD, and Civil 3D
& Manufacturing

Professional CAD/CAM tools built on Inventor and AutoCAD
Integrated BIM tools, including Revit, AutoCAD, and Civil 3D
Professional CAD/CAM tools built on Inventor and AutoCAD
Autodesk Support
Dec 31, 2024
Products and versions covered
When launching an AutoCAD Product or Toolset (AutoCAD Architecture, AutoCAD MEP, Civil 3D, and so on,..), an error message similar to the ones below is displayed:
Catalog file 'Support\AcFields.fdc' is not found.
Catalog file 'C:\User\[username]\AppData\Roaming\Autodesk\AutoCAD 20xx\Rxx\[language]\Support\AcFields.fdc' is not found.
Try one or more of the following troubleshooting solutions:
To reset AutoCAD to defaults, follow the steps in the Knowledge Article: How to reset AutoCAD to defaults.
Note: Autodesk recommends making backups of the registry key and folders that are mentioned in the above articles for resetting Civil 3D and AutoCAD profiles.
Was this information helpful?
The Assistant can help you find answers or contact an agent.
What level of support do you have?
Different subscription plans provide distinct categories of support. Find out the level of support for your plan.
How to buy
Privacy | Do not sell or share my personal information | Cookie preferences | Report noncompliance | Terms of use | Legal | © 2025 Autodesk Inc. All rights reserved