Notebook: Notebook suddenly started to ask for a password?

[tschm]

I assume there is an entry in the config file somewhere? How can I deactivate the password explicitly...
Thank you

thomas

[skycaptain]

Same issue here after upgrading to 4.3.0. As a workaround set c.NotebookApp.password inside ~/.jupyter/jupyter_notebook_config.py explicitly or downgrade to 4.2.3.

[gnestor]

This is the result of https://github.com/jupyter/notebook/pull/1831 which makes notebook servers authenticated by default.

My login page looks like:

If you run jupyter notebook list, you will see something like http://localhost:8888/?token=6d48d4d8990d2adf9c0313fec7d462b5e265fe227452a273, so just copy and paste that into the browser and you will be _logged in_.

[takluyver]

While it is possible to disable this, we don't recommend it. Using authentication by default was done to close a security hole, and disabling it opens that hole back up. See #1944 and this security doc for more details.

We know this change will cause some disruption; we're doing our best to minimise that, and if you tell us more about what you're doing, we'll see if there's any way to make things easier. But security is important for something that can execute code on your computer.

[skycaptain]

@gnestor: Thanks. All I'm seeing on my login page is a password field. No description, even with having the password option commented out in the jupyter options. As from the security doc, jupyter is supposed to ask for a token in this case, which it does not (at least not on my machine). However, the token from the terminal works as a password in this case. The only other option set in my jupyter config is c.NotebookApp.open_browser = False. So, I'm guessing this is the real issue. If set to True one would automatically be logged in with a token.

This is indeed very confusing. Thanks, also @takluyver, for clearing things up.

[minrk]

@skycaptain indeed, there's supposed to be info on that page explaining about tokens, but I mixed up some logic so it's never shown in 4.3.0. The login page looks like this in 4.3.1:

[gnestor]

I'm closing this as it's fixed in 4.3.1, which we will try to release in the next couple days.

[tanayag]

@minrk
Thanks, pasting the token worked for me.

[gnestor]

@MissOgra Are you running notebook 4.3 or above (jupyter notebook version)?

[malliwi88]

hello, I have problems because jupyter notebook list doesn't show token :/

Can anyone help me with this issue?

[takluyver]

That most likely means that it's finding an older version of the notebook package than the version you're running the server from. Try tracking that down and upgrading or removing the old version.

[plouismarie]

There is also an other use case, when you have too many notebook already open, it will just ask you for the password, whatever you have in the config file
workaround for me was to close some of them

[I 00:18:58.205 NotebookApp] The port 8888 is already in use, trying another port.
[I 00:18:58.205 NotebookApp] The port 8889 is already in use, trying another port.
[I 00:18:58.206 NotebookApp] The port 8890 is already in use, trying another port.
[I 00:18:58.215 NotebookApp] Serving notebooks from local directory: /Users/plouismarie/Documents/deep-learning/dcgan-svhn
[I 00:18:58.215 NotebookApp] 0 active kernels
[I 00:18:58.215 NotebookApp] The Jupyter Notebook is running at: http://localhost:8891/
[I 00:18:58.215 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[I 00:18:58.428 NotebookApp] 302 GET /tree (::1) 1.22ms

[woodrujm]

Sometimes my jup note asks for a password and sometimes it doesn't. I have commented out the entire config file (setting the password/token in there did not work for me). In addition, sometimes when I open a notebook it will ask for password , I will close it then reopen on a different port and it opens without requesting a password. Very confused.

[takluyver]

With the default settings, it's always using the authentication token. But when you start the notebook server and it opens the browser for you, it passes the token automatically, so you don't see the password page.

Once it has authenticated, it relies on cookies to stay authenticated. So make sure that your browser allows cookies.

[woodrujm]

I'm not sure I understand; when I open it the first time it asks for a password. Closing this page, then opening again (from command line with "jupyter notebook") it does not ask for a password. Are you saying the initial command sets cookies (even though it still asks for a password), then closing and opening again uses the previous token (even though I didn't type a password/token in)?

[gnestor]

When running the notebook server, you will see output that looks like:

[C 19:07:26.417 NotebookApp] 

    Copy/paste this URL into your browser when you connect for the first time,
    to login with a token:
        http://localhost:8888/?token=d227d9d83bd9dc5b58a4100106f3c753fc422aed713ea64f

If you don't use the --no-browser flag when running jupyter notebook, it will open that URL in the browser (and then remove the token parameter from the URL after authenticating).

[takluyver]

And the cookies should only be set once you are authenticated. I don't understand what would lead to the circumstances you describe. Is it possible you're running more than one notebook server on different ports?

[woodrujm]

$ jupyter notebook list
Currently running servers:
http://localhost:8889/ :: C:\Users-----\desktop\TF_book\example_code\ch_10
http://localhost:8888/ :: C:\Users------\desktop\TF_book\example_code\ch_10
http://localhost:8891/ :: C:\Users-----\desktop\TF_book\example_code\ch_11
http://localhost:8890/ :: C:\Users------\desktop\TF_book\example_code\ch_11

I would say that is possible.... I still don't understand why that would change the authentication though

[takluyver]

The authentication is for each server, so part of why you're randomly seeing authentication screens might be to do with switching between servers. I don't know why the list isn't showing you tokens, though - maybe it's running with an older version of the notebook package.

[janascc]

Hi guys
I can't use jupyter Python because of this "Token authentication is enabled".
Unfortunately, I am not able to run either the command "Jupyter notebook list" because I am using windows in a business environment, hence, no command prompt available either.
The IT desktop support installed Python Anaconda but they don't have any clue how to provide me with a token or a password.
Do you mind please help me with some workaround or simple hints to share with the IT support?
PS: the IT desktop support, already went through all info in https://jupyter-notebook.readthedocs.io/en/stable/public_server.html without understanding what actually they have to do for help.
Thank you in advance.

[gnestor]

You can read about alternative to the token-base authentication here: http://jupyter-notebook.readthedocs.io/en/stable/security.html#alternatives-to-token-authentication

You can ask your IT person to run jupyter notebook password and set a password that can be shared with you and anyone else using the Jupyter notebook server.

[janascc]

@gnestor thank you! All guys for all advise, probably they are going to enable me using the command prompt that makes everything easier, cross finger 👍
By the way, I'm impressed about all feedback received.

[akhileshravi]

You will get this message in the terminal when you start Jupyter:

Copy/paste this URL into your browser when you connect for the first time,
    to login with a token:
        http://localhost:8889/?token=a2f3bd.........................................

(I added the dots myself)
Copy that link from your terminal and you will be able to use Jupyter without typing any password or token

[Naviden]

No token is displayed when I start the jupyter notebook:

neither jupyter notebook listgives me something:

any idea?

[gnestor]

@Naviden What version of jupyter notebook are you running (run jupyter notebook --version)?

Do you see a token or password entry in your notebook config (usually at ~/.jupyter/jupyter_notebook_config.json but you can run jupyter --paths to find out where your config directories are, you might have config in more than one!).

[Naviden]

Thanks @gnestor . my notebook version is 5.6.0 and the config file has a password:

{
  "NotebookApp": {
    "password": "sha1:5c4ee3a53a51:7dc5ac1aec7fd334df619ca32180c12abc5628aa"
  }
}

which doesn't work:

UPDATE: I just update notebook to version 5.7.4 but the problem is still there

[gnestor]

That's surprising!! The only thing that I think of is that you may have a password set in another config file. Try running jupyter --paths and then inspecting the jupyter_notebook_config.json files in those other config directories.

[takluyver]

N.B. The sha1:... value is not the password it's expecting. That's the salted hash of the password. If you don't know what password was set, either delete that file or run jupyter notebook password to pick a new password.

[ozars]

It was prompting password on localhost although I had upgraded jupyter/notebook to latest versions (4.4.0/5.7.8) through pip. I realized that was due to me having default configuration created by previous versions in ~/.jupyter directory. I just removed that directory as I didn't have much customization on that machine and it was fixed in next run as it created default configuration fresh.

That was kind of obvious, but it took some time for me as I overlooked it. Just noting here in case someone ends up with this issue like I did.

[AmirTIQK]

It was prompting password on localhost although I had upgraded jupyter/notebook to latest versions (4.4.0/5.7.8) through pip. I realized that was due to me having default configuration created by previous versions in ~/.jupyter directory. I just removed that directory as I didn't have much customization on that machine and it was fixed in next run as it created default configuration fresh.

That was kind of obvious, but it took some time for me as I overlooked it. Just noting here in case someone ends up with this issue like I did.

This worked for me too, thanks @ozars!

[maxiriva92]

If jupyter notebook is set just for testing and compiling (non productive environment) I recommend to run:
sudo visudo

and then modify the etc/sudoers file to:
$sys ALL=(ALL) NOPASSWD: ALL

I strongly recommend doing this in non-production environments

[Tazinym]

It was prompting password on localhost although I had upgraded jupyter/notebook to latest versions (4.4.0/5.7.8) through pip. I realized that was due to me having default configuration created by previous versions in ~/.jupyter directory. I just removed that directory as I didn't have much customization on that machine and it was fixed in next run as it created default configuration fresh.

That was kind of obvious, but it took some time for me as I overlooked it. Just noting here in case someone ends up with this issue like I did.

HI,

Which directory did you remove? Can you elaborate?

[ozars]

Which directory did you remove? Can you elaborate?

~/.jupyter: .jupyter directory in user's home directory in a linux system. Not sure where it is located in Windows (in C:/Users/<username> perhaps? dunno.)

[KBor69]

I had the same problem and removed C:/Users//.jupyter directory. (I am running jupyter in conda environment under Windows 10). It fixed the problem for me.

[ryan-williams]

This suddenly started happening to me: no token printed on jupyter notebook start, password-only prompt in browser, no token printed by jupyter notebook list.

Things that I did, which didn't work:

• mv jupyter_notebook_config.json{,.bak} (disable jupyter_notebook_config.json)
• pip uninstall jupyterlab{,-server}

I moved some files from ~/.jupyter/ to ~/tmp/ (lab/, migrated, beakerx.json, jupyter_notebook_config.json.bak), and then started seeing the normal behavior again.

However, moving those files back, I still see the normal behavior, so it's not clear what actually unstuck me.

Some relevant versions:

ipykernel          5.2.1
jupyter            1.0.0
jupyter-client     6.1.3
jupyter-console    6.1.0
jupyter-core       4.6.3
notebook           6.0.3

[prashil2792]

@ryan-williams use jupyter notebook password command to set the new password and then try your new password.

[senthilkumarIRTT]

N.B. The sha1:... value is _not_ the password it's expecting. That's the salted hash of the password. If you don't know what password was set, either delete that file or run jupyter notebook password to pick a new password.

Your suggestion is working Thank u. Dr.R.Senthilkumar, Assistant Professor, Department of Electronics and Communication Engineering, Institute of Road and Transport Technology, Erode, Tamilnadu

[senthilkumarIRTT]

@ryan-williams use jupyter notebook password command to set the new password and then try your new password.

Your suggestion is working Thank u. Dr.R.Senthilkumar, Assistant Professor, Department of Electronics and Communication Engineering, Institute of Road and Transport Technology, Erode, Tamilnadu