JNLP does not launch

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thomas.demetriou
Posts: 3
Joined: 08 Oct 2025, 00:56

JNLP does not launch

Post by thomas.demetriou »

Hi team

Ever since we moved from Oracle Java to Java JDKs we are unable to open our JNLPs.

I have tried using OpenWebStart and IceTea Web to no avail...

originally I was getting messages about main classes but now I am getting new messages and not getting much value from the logs as I am able to discern.

I am using Amazon Corretto 21 JDK

Open Webstart 1.2.2

IceTea Web 1.8.7

Attached stage 1 and 2 logs as well as settings
Attachments
2025-10-07_19_24_11.668-ows-settings.log
(482.51 KiB) Downloaded 23 times
2025-10-07_19_24_48.481-ows-stage2.log
(2.24 KiB) Downloaded 15 times
2025-10-07_19_24_48.481-ows-stage1.log
(21.24 KiB) Downloaded 18 times

thomas.demetriou
Posts: 3
Joined: 08 Oct 2025, 00:56

Re: JNLP does not launch

Post by thomas.demetriou »

The JNLPs are for IBM/Brocade Fiber Channel SAN switches as well as IBM/Cisco Fiber Channel switches

Janak Mulani
Posts: 1088
Joined: 24 Mar 2020, 13:37

Re: JNLP does not launch

Post by Janak Mulani »

Please use the latest version 1.12.0 of OpenWebStart.

thomas.demetriou
Posts: 3
Joined: 08 Oct 2025, 00:56

Re: JNLP does not launch

Post by thomas.demetriou »

Updated to 1.12
heres the error
netx: Initialization Error: Could not initialize application. (Fatal: Initialization Error: Unknown Main-Class. Could not determine the main class for this application.)

Janak Mulani
Posts: 1088
Joined: 24 Mar 2020, 13:37

Re: JNLP does not launch

Post by Janak Mulani »

Please send the logs after you launched your Jnlp with OWS v1.12.0.

For a guaranteed time bound response I request you to buy paid support: https://openwebstart.com/support/

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