connection error of server

[Ganga Shah]

last friday there was update on windows.

after updating windows

i am not able to open any jupyter notebook files older or newer ones.

please provide me possible solution for it.

i have attached the errors i got.

[C 2024-03-18 08:52:38.945 ServerApp]

    To access the server, open this file in a browser:
        file:///C:/Users/Arunp/AppData/Roaming/jupyter/runtime/jpserver-15164-open.html
    Or copy and paste one of these URLs:
        http://localhost:8888/tree?token=c7f41159f296d4e840f641887814c6794fd0aa89b00bb5ec
        http://127.0.0.1:8888/tree?token=c7f41159f296d4e840f641887814c6794fd0aa89b00bb5ec
[I 2024-03-18 08:52:40.894 ServerApp] Skipped non-installed server(s): jedi-language-server, julia-language-server, pyright, python-language-server, python-lsp-server, r-languageserver, sql-language-server, texlab, typescript-language-server, unified-language-server, vscode-css-languageserver-bin, vscode-html-languageserver-bin, vscode-json-languageserver-bin, yaml-language-server

[Mahesh Ravariya]

Hello Ganga!

I recently joined Google Groups and am currently checking all the past posts. I guess I can help you if the problem is not yet solved.

The error messages you've provided suggest that the Jupyter server itself is running, but there might be a problem with accessing the notebooks or with dependencies (such as language servers). Maybe we can try out these steps to troubleshoot the issue:

Upgrade the Jupyter Installation
The first thing you should do is make sure Jupyter is correctly installed and up-to-date, as updates to Windows might have affected some dependencies.
```

pip install --upgrade jupyter
pip install --upgrade notebook
```

Check Jupyter Version: To verify the installation, run:
```
jupyter --version
```

Clear Jupyter Runtime Files
Sometimes, old runtime files can cause issues. Try deleting Jupyter's runtime files. Navigate to the directory:
```
C:/Users/Arunp/AppData/Roaming/jupyter/runtime/
```
- Delete the contents in this folder (it may contain `.json`, `.lock`, or `.pid` files related to Jupyter sessions). These will be regenerated when you restart Jupyter.

Try Opening URLs Manually: 

Open one of these URLs directly in your browser: {{link would be different as you posted this on Mar 21, 2024, and I am replying to it today}}

```[http://localhost:8888/tree?token=c7f41159f296d4e840f641887814c6794fd0aa89b00bb5ec](http://localhost:8888/tree?token=c7f41159f296d4e840f641887814c6794fd0aa89b00bb5ec)
[http://127.0.0.1:8888/tree?token=c7f41159f296d4e840f641887814c6794fd0aa89b00bb5ec](http://127.0.0.1:8888/tree?token=c7f41159f296d4e840f641887814c6794fd0aa89b00bb5ec)
```   
If you can access the notebook dashboard via the URL but still cannot open files, the issue may lie with specific notebook files.

Thanks,

Mahesh R.