If you have Autodesk Desktop Connector (ACC Docs – changing to Forma brand) installed – and in 2026 you almost certainly do – stop using the built-in AutoCAD and Civil 3D Reference Manager. Reference Explorer is sitting right there in your system tray, and it does the job better in a way that actually matters especially for CAD Managers.
Don’t see it? Look for the “D” icon in your tray. Right-click it. There it is.


Drop a file in or browse to it. UNC paths work without any fuss. ProjectWise users, your flow is slightly different. Open the drawing in Civil 3D first, then find it in your local ProjectWise cache folder and load it from there. Not complicated, just a different sequence.
What you get is a full visual layout of every file in your dataset and every connection between them. Hover the lines and you’re looking at the relationships – and more importantly, you’re looking for the bad ones. Circular references surface fast with dashed lines when you can actually see the graph instead of hunting through a dialog box. Missing references go red.

Here’s where it gets real for larger multi office design firms, datasets that grow in ways nobody fully tracks until something breaks. What Reference Explorer actually shows you are the domino chains. One bad reference cascades into 3 others, those 3 into more, and suddenly nothing in the drawing resolves and the project is on fire at 4pm Friday. Bottom left corner gives you file count and total size. Look at those numbers before you touch anything.
This is the data hygiene work that piles up quietly until a crash or corruption forces the conversation. Big tangled datasets with undocumented references just sit there accumulating. Waiting. And they always pick the worst possible moment.
Autodesk has a short tutorial here: https://www.autodesk.com/learn/ondemand/tutorial/utilize-reference-explorer-within-desktop-connector
Use the tool before something breaks, not after.
Cheers,
-Shaan