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Editorial Team
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Asked: 2026-06-09T09:39:41+00:00

I want to build our app on an Ubuntu server. Our setup programs are

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I want to build our app on an Ubuntu server. Our setup programs are created with Install4j 5.1 and integrated in our maven build through the maven-install4j-plugin. The problem I have is that I can’t initialize the license information to point to our floating license server (localhost:11862). To initialize the license, I use the following command :

install4jc –license=XXXXXXXXX

The problem is that I don’t know the exact syntax to setup the license to a floating server. I’ve tried –license=localhost:11862 and I’ve tried to copy-paste my floating license key directly without success.

Where can I find basic instructions on how to setup my floating license infos on a headless system and above all, how to express it to stop receiving “Invalid Syntax Key” when executing install4jc?

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  1. Editorial Team

    The syntax for using a floating license server is 

    install4jc --license=FLOAT:localhost:11862

    If you have a Windows Edition license, you currently have to edit

    $HOME/.install4j5/config.xml

    and change floatingMultiPlatform="true" to floatingMultiPlatform="false" in that file.

    From install4j 5.1.3 on, you will be able to pass the command line option --windows-edition instead of editing the config file and the FLOAT:server syntax is documented when running install4jc --help.

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