How to open .ipynb file with one doubleclick on Windows

To be able to open .ipynb jupyter notebook files with a simple doubleclick on them run this in the command line:

pip install nbopen
python -m nbopen.install_win

This will reuse existing jupyter server if possible (=if it is already launched in the same dir).

Alternatively, you can associate ipynb with jupyter-notebook directly:

1. Run this command in cmd.exe under administrator privileges:

   assoc .whl=jupyter& ftype jupyter=cmd.exe /c jupyter-notebook "%1"
   

2. Alternatively, a slightly different line can be copied into a assoc_ipynb.bat file and executed through 'Run as administrator':

   assoc .whl=jupyter& ftype jupyter=cmd /c jupyter-notebook "%%1"
   

PS jupyter-notebook.exe is assumed to be in the PATH.