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KB Article #189640

How to open Java Web Start app (Correlation/Administration) with OpenJDK & IcedTea-web

In case no Java (from Oracle) is available on client side and only OpenJDK can be installed, the IcedTea-Web project provides a Free Software that may run applets on windows and it's a free solution.

Note: IcedTea-Web is tested and compatible with version 8 of Azul Zulu Builds of OpenJDK. Support for version 11 is not tested and is not an officially supported combination, as stated on https://docs.azul.com/


  1. Download OpenJDK https://adoptium.net/en-GB/temurin/releases/?os=any&arch=any&version=8 and run it. It will be installed in ProgramFiles
  2. get the IcedTea-Web source (https://adoptopenjdk.net/icedtea-web.html)
  3. Unzip the IcedTea-Web in a folder
  4. Set the JAVA_HOME to the AdoptOpenJDK\jdk folder

example:


5. Set the JAVA_HOME in the PATH:

6. Go to your IcedTea/bin folder and run the itweb-settings to open the control panel, then go to JVM Settings and browse to the previously installed OpenJDK:


You can ignore the error in red, it will have no impact.

How to use it:

1. Download the Administration.jnlp

2. From the IcedTea-Web/bin folder, execute the javaws executable with the path to the Administration.jnlp:


3. Click on Run

You can also start from where the jnlp file was downloaded, and choose to open it with javaws from the IcedTea/bin.

The same applies for the Correlation jnlp.