Issue running multiple workflows in parallel via batch in KNIME 5.5.1 (works fine in 5.4.4)

Hello,

I’ve recently upgraded from KNIME Analytics Platform 5.4.4 to 5.5.1, and I am experiencing a critical issue when running multiple workflows in parallel via batch execution.

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Environment:

Windows Server (running via SQL Server Agent + batch file)

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KNIME Analytics Platform 5.5.1

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Previously tested on 5.4.4 (no issues)

Problem description:

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When I launch multiple workflows in parallel (each in its own batch call) via SQL Server Agent, all KNIME processes close immediately and none of the workflows execute.

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However, when running a single workflow (batch execution one by one), everything works fine.

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This behavior did not occur in version 5.4.4.

Troubleshooting already attempted:

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Assigned unique

-data

(workspace) and

-configuration

directories for each batch execution.

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Tried multiple separate KNIME installations (copied installation folders).

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Still, in version 5.5.1, running workflows in parallel crashes immediately.

Expected behavior:

• Multiple workflows should be able to run in parallel, just like in version 5.4.4.

Question:

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Is this a known bug/limitation in 5.5.1?

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Is there any workaround or fix (e.g., in 5.5.2 or later versions)?

Thank you in advance for your support!