Cannot open new Jupyter Notebook [Permission Denied]

change the ownership of the ~/.local/share/jupyter directory from root to user.

sudo chown -R user:user ~/.local/share/jupyter 

see here: https://github.com/ipython/ipython/issues/8997

The first user before the colon is your username, the second user after the colon is your group. If you get chown: [user]: illegal group name, find your group with groups, or specify no group with sudo chown user: ~/.local/share/jupyter.

EDIT: Added -R option in comments to the answer. You have to change ownership of all files inside this directory (or inside ~/.jupyter/, wherever it gives you PermissionError) to your user to make it work.

On Ubuntu, 'permission denied' may appear when browser is installed as a 'snap'. I had this problem. I edited config file to open a regular browser and it worked.

How to change the default browser used by the ipython/jupyter notebook in Linux?

Tried everything that was suggested but finally this helped me:

sudo jupyter notebook --allow-root

In my case, it didn't start the browser by itself. So just copy the link from terminal and open it by yourself.

Update: Change folder(.local) permissions by this command:

sudo chmod -R 777 .local

In my opinion, it is a good practice to run Jupyter in a dedicated workbook folder.

$ mkdir jupyter_folder
$ jupyter-notebook --notebook-dir jupyter_folder

where 'jupyter_folder' is a folder in my home.

This method works without any permission issues.