problems starting notebook; doesn't see existing files and will not allow creation of new ones

[doolingdavid]

Out of nowhere today, when I start a new kernel / server

jupyter notebook
a window opens up in the browser as usual, but none of the files are visible and I can't create a new one either.

I shut down my computer and updated anaconda and juypyter and tried again, but the problem persists.
I don't understand at all! I am using jupyter notebook version 4.4.1

[gnestor]

Are you seeing an notebook server errors in the terminal? Are you starting the server in the same directory as before? Can you try upgrading to notebook 5 to see if that helps?

[doolingdavid]

Thanks; I did some googling and realized something new: the authenticition / token feature. I cut and pasted as directed and. Is things work. I work in a health care environment so there is all kinds of encryption so I do not know if that is the culprit but I noticed that now with the new token methods of starting the server for the first time; it takes a few minutes for things to appear and run. But then it's as usual! Thanks .

…

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On Apr 11, 2017, at 5:33 PM, Grant Nestor ***@***.***> wrote: Are you seeing an notebook server errors in the terminal? Are you starting the server in the same directory as before? Can you try upgrading to notebook 5 to see if that helps? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or mute the thread.

[gnestor]

Ya, this was introduced with notebook 4.3.0 so that explains it! Here is some info about the token-based authentication: http://jupyter-notebook.readthedocs.io/en/latest/changelog.html#release-4-3

[takluyver]

If Jupyter opens the browser, it should automatically pass the token in for you. It's weird that that's apparently not happening.

[docian]

same problem for me...

[siebenbrunner]

I had this start happening yesterday as well. No files nor folders shown regardless of which directory I started the notebook in and couldn't open a new Notebook, pasting a token link didn't work for me either.

I found out the issue for me was I had to replace the tornado package with an older version for installing a different package. I updated tornado to the latest version, now everything is working again.

[ltalirz]

Just to add some more specifics: this occurs when using notebook>=6 with tornado<5

E.g. try pip install 'notebook<6' or conda install 'notebook<6'.

[maaarleila]

Had the same issue a few days ago. I couldn't see any folders or files. I tried to update Tornado first, then Anaconda completely. Even a new installation did not help.

Solution for me: It was not a package or Anaconda itself, but the adblocker... (I use Opera version: 65.0.3467.78)

[Amberjay18]

maybe guys have a try to downgrade the notebook to 5.7.5 use commond:
pip install notebook==5.7.5

[olawaleibrahim]

Downgrading jupyter notebook worked for me. I used: conda install 'notebook<6'

[rallen10]

I can confirm, this still a problem with notebook==6.0.3. Using conda install notebook<6 as recommended by @olawaleibrahim worked for (i.e. it installed version 5.7.10 which did not exhibit this issue)

[ogkdmr]

Just try conda update --all. Updating all the packages took less than 3 minutes and solved the problem for me. You should not need to downgrade your software to solve an issue.