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This is a legacy documentation space! Please visit the License Server 5.0 documentation for an up-to-date information. 

This page covers the process for reprogramming the USB license dongle.


Page Contents


Dongle Reprogramming

In order to reprogram your dongle you need to have the dongle plugged in, the WIBU-KEY drivers installed and the V-Ray License Server installed and running.

Important note: If your dongle serial number starts with 13 please download the latest V-Ray license server from our web site.

If you do not have the necessary V-Ray licenses on your dongle, it will have to be reprogrammed. Reprogramming a dongle is a two-part process:

  • Creating a . wbc file – you will need to create and send to Chaos Group a remote programming context file, which contains information identifying your specific dongle.

  • Updating the contents of the dongle – Chaos Group will send you file called “.rtu” file which can be used to update the licenses on your dongle.



Creating a .wbc File

Here we describe how to create a remote programing context file (“.wbc”) file, which identifies your specific dongle. If there are more dongles attached on the machine, the steps below will create one “.wbc” file containing information for all dongles. You need to have JavaScript enabled on your web browser.

  1. Please open the link http:// <IP_address> :30304/ upgrade in a web browser, where <IP_address> is the IP address of the license server. For example:

    Finding your IP address

    Please note that the IP address above is just an example for a computer which has an IP address of You need to use your particular IP address in order for the process to work. You can see how to find your IP address from the link below:

  2. A web-based wizard will appear. Click on the link shown on the screenshot:

  3. Wait until the remote context file is created.

  4. When the Success! page appears, save the remote context file by right-clicking on the link and using Save Link As.../Save Target As...

  5. Email this file to along with company and order information.



Updating the Contents of the Dongle

The support team at Chaos Group will use your “.wbc” file to generate one or more “.rtu” files and send them back to you. Each “.rtu” file is named with the serial number of the dongle that it is intended for. You can find the dongle serial number on its sticker.




  1. When you receive the “.rtu” file, save it on the machine where the dongle with the same serial number is plugged-in.

  2. If the V-Ray license server is running, stop it by double clicking its icon in the Task Bar and selecting Terminate V-Ray license service . If it is registered as a service you have to stop the V-Ray license server from Windows Control panel > Administrative tools > Services applet.

  3. Double-click the saved “.rtu” file. You will be asked to confirm the transfer on the dongle. Click Yes to update your dongle. If there is a problem, please refer to WIBU-KEY drivers are properly installed, but double-clicking on the .rtu file doesn't update the dongle” in the Frequently Asked Questionssection.

  4. Start the V-Ray license server from Windows Start > All Programs > Chaos Group > V-Ray License Server for x64 > Launch V-Ray license serv er or from the Services applet.

Mac OS X

  1. When you receive the .rtu file, save it on the machine where the dongle with the same serial number is plugged-in.
  2. Then open Finder and navigate to /Applications/WIBUKEY/ folder and start the WkConfig. The utility requires Java Runtime 6 or higher version to be installed. You will be prompted to install it if it is not already available on the system:

  3. Afterwards please go to the Update tab of the WkConfig then chose Execute Update and select the .rtu file that you have received:

  4. The license will be upgraded shortly – you can check the status in the V-Ray License Server web interface at http://localhost:30304

    In case you experience difficulties with the Java installation or the upgrade through the WkConfig utility you can use the following command in Terminal to upgrade the licenses on the dongle:

    $ wku REMOTE USB SET FROM somefile.rtu

    Where somefile.rtu is the name of the .rtu file you received from Chaos Group. 



  1. When you receive the .rtu file, save it somewhere on the disk of the machine where the dongle is plugged.

  2. Close the V-Ray license server, if it is running.

  3. From a terminal window, enter the command:

$ wku REMOTE USB SET FROM somefile.rtu  

where somefile.rtu is the name of the .rtu file you received from Chaos Group.Start the V-Ray license server again.



After the dongle is reprogrammed, you can check if the new licenses have been added successfully as described in V-Ray license server status at the beginning of this section.