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Troubleshooting "Connection to notebook server could not be established" message

Troubleshooting


Problem

Cognos Analytics 11.x environment with Jupyter.
Jupyter part is configured and up and running, and "Many moons" message appears when Jupyter URI is accessed directly in a browser.
However, when the same URI is specified in Cognos configuration the following message appears in the application:
"Connection failed
A connection to the notebook server could not be established. The notebook continues trying to reconnect. Check your network connection or notebook server configuration."
image 11416

Document Location

Worldwide

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Document Information

Modified date:
14 January 2026

UID

ibm16486481