Documentation for MATLAB R2021a is not opening

Documentation for MATLAB R2021a is not opening. It tries to load but I do not see any output. What to do? 

Answer 1

[MathWorks Support Team]

There is a change in the default behavior of documentation in MATLAB starting from MATLAB R2021a release. From this general release: 

• When running MATLAB with an internet connection, the ‘Help browser’ will display the web documentation by default. 
• If an internet connection becomes unavailable, MATLAB will display the installed documentation instead. 
• When running MATLAB on a system without an internet connection, the Help browser displays the installed documentation by default. 

All programming aids tools and search suggestions will still use installed files to get the information they need. 

If internet connection for MATLAB host machine is slow, it may cause documentation pages to take a long time to load.  In such a case, one can change the default documentation settings to view installed documentation using ‘Preferences’ option. Installed documentation will already be made available on the host machine while installing MATLAB. 

To change the default documentation location,  

• On the ‘HOME’ tab in MATLAB, click ‘Preferences’ in the ‘ENVIRONMENT’ section. 
• Select MATLAB > Help and change the Documentation Location.  

The above steps are also shown in the image below. For more information, see Help Preferences . 

[Bruno Luong]

I switch all my installation to local, even if I have fast internet connexion.

Not sure what is the internet option is intended for.

[Bruno Luong]

FWIW, I have MATLAB crashs just by open some of the help page, possibly in relation with Windows Remote Desktop Connexion, OPENGL HW/SW, Internet/Local.

It seems like there is some major BUG in the R2012a.