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Can´t make jupyter notebook work in Anaconda

On my windows PC, i have Anaconda installed, but today i could not open Jupyter Notebook correctly. When i use these commands to set up an enviornment, i can open the Jupyter notebook.
conda activate [name_of_the_environment]
jupyter notebook
The error occurs when internet explorer opens the Jupyter notebook, because i can't access to my ipynb files or any other. The page just stays like this (in blanc, like it does not end loading):
Internet explorer general site
Trying to open a file
I am not having any connection problems and this happens regardless of the file size.
I also tried updating Anaconda, but it didn´t work.
Code written in the terminal:
Code

Anaconda Jupyter Notebook blank page when open

I have already download and installed the Anaconda. However, I have a blank page when I open the Jupyter Notebook. I dont know what happen.
Jupyter Notebook: 6.4.5
MacOs: 12.2.1

I use Google Chrome and solved my problem by reading the official Jupyter Notebook page in the section "Jupyter fails to start".
https://jupyter-notebook.readthedocs.io/en/latest/troubleshooting.html
In my case, one of my Chrome extensions was messing with Jupyter, I disabled them all and reactivated them one by one until I found which one was messing up.

vscode Jupyter notebook run button missing

Everything works fine when I first open vscode and create a new Jupyter notebook
When I save and reopen it, the run button is gone.
I have added "jupyter.experiments.optOutFrom": ["NativeNotebookEditor"] to setting.JSON and still no change
python is installed
Jupyter notebook installed
How can I make it to work?

It looks weird, the appearance of the jupyter notebook in your question is different from mine:
In my memory, it looks like the older version of the jupyter notebook.
Could you provide more info about the jupyter notebook you are using? Like this:
And could you try to reinstall the Jupyter Notebook extension and disable other extensions which may be related to .ipynb file?

Use shift+enter and that should run the cell.

You should open the folder as a workspace and then, the button is shown. If you only open the file the result is that you can read the content, but not run the python code.

To elaborate on Steven-MSFT's answer, I saw that there was a button called "Reload Extension" indicated on this drawing below:
You can access this sidebar by entering cmd + shift + p, and then entering "Extensions: Install Extensions", as seen below:
Once I reloaded my Jupyter extension, all worked fine for me.

I had the same problem today. Uninstall and reinstall of "Jupyter" extension solved it.

nbopen fails upon "open with" command

I've been searching for a way to open jupyter notebooks by double clicking on .ipynb files in Windows explorer, and I've installed nbopen since visiting this stackoverflow answer.
Jupyter notebooks run fine on my computer, and I can open a server if I navigate to the correct folder in anaconda prompt and type for instance jupyter notebook or nbopen file.ipynb.
However, when double clicking on .ipynb files (or "open with" nbopen.exe) I get the error messages displayed in the screenshot below. Apologies for the lack of a text version - the window disappears very quickly and I've only captured this by means of well-timed screenshot taking (incidentally, any tips on how to capture short-lived error messages like this in future would be appreciated). After the window has disappeared, nothing further happens
To try to resolve the error I have reinstalled nbopen but no success. I have also tried opening the .ipynb files with jupyter-notebook.exe, which duplicates this error message after from notebook import notebookapp.
The default python version (i.e. the first result for python --version) on my PC is Python 3.8.5.

Error occurred while creating new notebook in Jupyter Notebook [Permission Denied]

I'm trying to open new notebook in Jupyter Notebook. But it's denies my permission.
Along this problem when I try to open one of directories it's throws an Server Error ,It's occurs in every directory
I'm using conda version 4.4.10 , Windows 7 Professional (if it helps)

Launch anaconda as administrator .

It is not a very good idea to run as admin because you may mess up the whole system by putting commands unless you really know what you are doing(professionally). We generally work with computers under "Admin privilege".
What you need to do is, to make sure you are at "c:\users\your username". If you are not there: type "c: cd\Users\your username".
You are probably at "C:\> " when you try to open "jupyter notebook". Hope that helps!

This error occurred due to window defender .
add jupyter app to allowed app in firewall & protection .
i hope the problem is solved.

if you are going through anaconda prompt. just click on Anaconda navigator and lanch jupyter notebook from here, if your page opened in internet explorer just copy URL and paste in chrome and now re-try to create a new notebook. I hope it will work