License files run only on the license server or hardware appliance that was specified when they were generated. If you change the binding identifier of a server or appliance hosting license files, you must reallocate license files so that they match the new binding identifier.
The binding identifier is the information in the license file that identifies the machine where the license file is hosted. The binding identifier is usually the license server hostname, but it can also be a hardware appliance name, Ethernet address (MAC address), or FQDN.
Designating a new binding identifier when you reallocate licenses does not consume additional licenses. The process changes only the binding identifier for the licenses.
For License Server VPX: Open a web browser and go to http://License Server Name:webport.
and type the following command: lmreread -c @localhost -all.