Running Interactive Jupyter Notebook - Galaxy could not be reached

usegalaxy.org support
1

I am trying to run an interactive Jupyter Notebook instance on the galaxyp browser. It says it is running in the Active Interactive Tools panel, but when I try to open it, it says Galaxy could not be reached. I’ve tried it a couple times throughout the past week and recieved the same message. Any help would be much appreciated.

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Hi @vant

First, please try again since this type of connection issue is usually temporary. Delete the existing job to clear it, then create the environment from scratch again. Be sure to only be running one interactive environment at a time.

Then, if you are still have problems, would you share the full URL to the Galaxy server where you are working again? You named the link for one server, then the link itself was for a different server.

Or better, you could also share your history where the environment is running from. How to share is in the banner of this forum, also here.

Let’s start there, and let us know if you solved this already! :slight_smile:

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Hi @jennaj

Thanks for getting back to me. I’ve tried stopping the interactive environment and running the tool again from scratch multiple times throughout the week and have had the same result each time. It happens on any of my histories. I just tried it again, here is the history that I am running it in Galaxy

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Hi @vant

Thanks for sharing your history!

I do see this in the logs

[W 2025-04-30 04:39:29.536 ServerApp] No web browser found: Error(‘could not locate runnable browser’).

Trying to run this in incognito/private mode or with cookies managed will probably lead to problems like this. Try using Safari or Chrome. Do not close the Galaxy window: leave both Galaxy and Notebook both open in tabs. The session will only be useable while you are using it. Avoid navigating to a different history then attempting to reference data from the original history.

If you need to do something else, save back the notebook to the history, then launch the session again using the saved copy when you are ready to work again.

You don’t have to use Galaxy to use a Notebook, but if you want to connect data from your history directly into a Notebook, the connection needs to stay open.

As an example, I just ran through this tutorial at UseGalaxy.org, and the get() and put() commands all work as expected, with the Galaxy history connected to the environment. I was running this in Chrome with cookies accepted.

Please try again and let us know how this works!