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Editorial Team
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Asked: 2026-05-16T22:59:37+00:00

I have an Java application for copying large amounts of data from users’ workstations

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I have an Java application for copying large amounts of data from users’ workstations to a server. The java.io.File class is supposed to work with UNC paths very well and in fact it does but only when I run the app in standard execution model.

When the application is launched via Web Start I get a FileNotFoundException when trying to open a FileOutputStream with “The network path was not found” in message. Again everything works fine when I download the jar to the PC and lauch it from command line.

My app is signed and i define all-permissions in JNLP.

Edit: I have also discovered that when I map the UNC path to a drive letter it works too.

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1 Answer

  1. Editorial Team

    There is no solution to this. I ended up mounting the path as a named volume and using it trough the volume.

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