Requesting previously issued licenses again from the license server

If for any reason the TwinCAT 3 license file no longer exists (for example, because a new image was loaded to the computer and the license file was not backed up beforehand), the license file can be requested again from the TwinCAT 3 license server.

To do this you have to create a Request File for the original license device (Beckhoff IPC or TwinCAT 3 dongle) with one of the contained licenses (the TC1000 license is usually the best and simplest choice) and send it to the license server (tclicense@beckhoff.com). It is not necessary to quote a License ID or a License TAN. (However, as the License ID is a mandatory field in the TwinCAT Engineering, an entry has to be made here. You may enter an arbitrary string).

The license server now sends a License Response File containing all the licenses that have been issued before for the System ID specified in the License Request File.

In this case the license server always generates a single new License Response File. If, for example, the licenses originate from several orders or have been licensed in two or more requests, they will be combined in the new License Response File. The name of the new License Response File may therefore differ from the name of the original license file.

A TwinCAT 3 dongle may have different Dongle System IDs depending on the Platform Level of the computer to which it is connected. With the current version of the license server the licenses must be called with the System ID (of the dongle) with which they were originally activated.