"DOC is not currently available" error when using the local documentation in MATLAB

I don't want to connect to the Internet just to read a file, so I've set up documentation variable to "local" from "Web", but it appears there's no file or something, because I get

DOC is not currently available

Also, is it possible to change preferences like these without using GUI? I hate its look and feel.

Answer 1

[Abdolkarim Mohammadi]

Just google the name of the toolbox you want plus "pdf documentation". You can find the documentation homepage for the toolbox, where you can find the pdf documentation as well as user guide and release notes. For example for the deep learning toolbox:

"matlab deep learning pdf documentation"

https://www.mathworks.com/help/deeplearning/

Answer 2

[Stefanie Schwarz]

For MATLAB R2022b and prior, there is no need to download & install the local documentation because it should be part of your MATLAB installation by default. See the following answer for more information regarding the "DOC is not currently available" error: https://www.mathworks.com/matlabcentral/answers/820690-doc-is-not-currently-available

There are some MATLAB Preferences that you can change using the command line, but the Help preference doesn't seem to be one of them: https://www.mathworks.com/help/matlab/matlab_external/access-and-modify-settings.html