A powerful, free feature for SketchUp to manage host file blocking—particularly for disconnecting SketchUp from Trimble/3D Warehouse servers to prevent licensing checks—is to create an automated or extension.
Blocking domains via the hosts file is a common method for preventing the software from communicating with licensing servers or web tools like the 3D Warehouse. This technique is often used to resolve connection hangs or to force a "checked out" license to remain offline. How to Block SketchUp via Hosts File block sketchup host file free
Henderson’s smile froze. "Bradley? Where is the glass atrium?" A powerful, free feature for SketchUp to manage