Matlab 2019b installer does not install on Mac OS Catalina

After upgrading to Mac OS Catalina, I have had troubles with Matlab 2019a. Unfortanetly, the installer for Matlab 2019b does not work either. Here is the error I get when I run the 2019b installer.

Error : unable to connect to host.

sun.security.validator.ValidatorException: PKIX path building failed:

sun.security.provider.certpath.SunCertPathBuilderException: unable to find

valid certification path to requested target

Should I remove the 2019a installation, before installing 2019b?

[Vincent Thijs]

same issue here and mathworks support did not really help: tried without antivirus program and bypassed university network with mobile hotspot: no luck

[Jared Smith]

Can someone please help with this? I have the same issue for Matlab R2019b on MacOS Catalina 10.15.1

[Johan Van Audekerke]

Can someone help please same problem here on a windows server 2016 trying to install Matlab R2019b

[Walter Roberson]

https://stackoverflow.com/questions/21076179/pkix-path-building-failed-and-unable-to-find-valid-certification-path-to-requ

Answer 1

[SaiDileep Kola]

Hi Roozbeh,

It is not necessary to remove the 2019a installation to install the 2019b version but the issue might be because of license after the OS upgradation, you can contact your sales representative to know your license terms, in case you don’t know you can follow this link

https://www.mathworks.com/support/contact_us.html

Answer 2

[Stefan Liebich]

Installing the Java Runtime Environment helped for me. You can get it, e.g., here:

https://www.java.com/de/download/manual.jsp

I chose the offline version