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I'm using python3.5 and jupyter 4.0.6. I launched the jupyter notebook, and get the following output:

[I 21:47:27.021 NotebookApp] Serving notebooks from local directory: /home/nitrous
[I 21:47:27.021 NotebookApp] 0 active kernels
[I 21:47:27.021 NotebookApp] The Jupyter Notebook is running at: http://localhost:8888/
[I 21:47:27.022 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[W 21:47:27.023 NotebookApp] No web browser found: could not locate runnable browser.

on my firefox browser, I typed the specified localhost url: http://localhost:8888/ but I get unable to connect error message. What am I missing? is the hint of the problem on this line: 

[W 21:47:27.023 NotebookApp] No web browser found: could not locate runnable browser.

it is my first time using the notebook. I tried to put the below code in the jupyter_notebook_config.py file but to no avail:

c.NotebookApp.open_browser = True
c.NotebookApp.browser = 'firefox'

it also says 0 active kernels. is that a problem?

Wally Ali
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  • Is the notebook server running on a different machine? Or in a virtual machine? `localhost` means 'this computer', so the default settings require it to be running on the same machine as the browser. – Thomas K May 23 '16 at 10:48

4 Answers4

6

If you are running your jupyter notebook in a VM (mostly on a linux vm on a windows guest) and trying to access from guest, you will need to launch Jupyter Notebook with right options. Please try to run it like below and it should work.

jupyter notebook --ip=0.0.0.0 --no-browser

Please check the ip of the VM before you enter the URL in firefox. you can use 

ifconfig

command for this.

varun
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5

While running Jupyter on my ec2 instance I had faced the same issue. I resolved it by executing the following command :

jupyter notebook --no-browser

Initially it will show 0 active kernels, once we start creating notebooks on different environments like Python,R etc it will show us the number of active kernels.

tarun kumar Sharma
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0

I had a similar problem but with Chrome. I dont know in firefox but in chrome, Settings-> Enable guest browsing.

user5987828
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0

I have a similar problem at first. I solve it by changing the following line in jupyter_notebook_config.py:

c.NotebookApp.browser = r"C:/Program Files (x86)/Google/Chrome/Application/chrome.exe --app=%s"

I guess adding prefix "r" prefix to convert the string to raw string has actually solved this problem.

quantum.snowball
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