The AVAIL desktop application is required for RPC and F+DW products.
AVAIL for Revit is required to Drag and Drop RPC content in Revit.
Download the plugins for the products you wish to use RPC with.
Version 27.0.0.62
Version 27.0.0.40
Version 27.0.0.88
Version 27.0.0.31
Version 27.0.1.10
Version 27.0.0.34