The instructions for Octave 4.2.0 - 4.2.2 are the same as for Octave 4.4.0
above. However, note that version 4.2.0 has a bug that prevents it from automatically retrieving packages from the [https://octave.sourceforge.io/packages.php Octave Forge website] for installation or updates. Manual package installation is necessary with this version to update or install new packages on Windows.
To manually install a new or updated package version, the package file can be downloaded from the [https://octave.sourceforge.io/packages.php Octave Forge website] to the working directory and can be installed using:
>> pkg install package_file_name.tar.gz