Files of type .adsk must first be opened from Vault and converted to a .rfa files before they can be loaded into a project.
Click Open from Vault on the Vault ribbon in Revit.
Navigate to the .adsk file that you want to open and click OK.
The file is downloaded from the Vault and converted to a .rfa file with the same file name.
The Load into Project button illuminates on the Create Tab of the Revit Ribbon.
Click Load into Project on the Create Tab of the Revit Ribbon.
The .rfa file is loaded into the current project.
Click Yes to overwrite any changes to the file on the local drive, or click No to cancel.