
When you launch the Program from the Client System it will go to the Server and request a License and then a Packet is handed out which allows your (in this case Autodesk) Program to work and will check the Server once in a while to make sure the License is still available. When you are running the Network license Type you have a Service running on the Server that broadcasts the fact that you have licenses.

In some situations, where more than one Autodesk product is installed in the system, the LTU can run for a specific product but not for other(s).

This happens because for an unknown reason, the license file, or the entry for a specific product in the license file is corrupted. No error message and no entry in the Event Viewer will indicate a problem with the utility. When trying to run the License Transfer Utility of an Autodesk product, the LTU application doesn't start and nothing happens.
