If you previously installed the default material library on your local system but it was removed, you can reinstall it with the following steps:

Reinstall the Autodesk Material Library using a product installer Installing another Autodesk product that does have the Autodesk Material Library, such as Autodesk Inventor, Autodesk AutoCAD, Autodesk Revit and 3ds Max, will add the default Autodesk Material Library to your local system so that it can be used by Autodesk InfraWorks. Install the Autodesk Material Library using another Autodesk Product There are several ways that you can install the Autodesk Material Library. To install the Autodesk Material Library for InfraWorks Not all Autodesk products use all sub-libraries.Not all Autodesk products include an install of the Autodesk Material Library by default.

For those products, the Autodesk Material Library is installed by default using the product installer it can be removed using the Windows Control Panel. The Autodesk Material Library consists of several shared sub-libraries of materials and textures that are installed with some Autodesk products such as Autodesk Inventor, Autodesk AutoCAD, Autodesk Revit and 3ds Max. Without the required material libraries installed, 3D objects that were created in other Autodesk products such as Autodesk Revit or Autodesk Civil 3D may display inaccurately in your InfraWorks models. Why do I need the Autodesk Material Library?

This can occasionally cause issues with the display of textures and materials for 3D objects that you import to or export from Autodesk InfraWorks. By default, the Autodesk Material Library is not installed when you install Autodesk InfraWorks.

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