Installation fails - Error: Unable to connect to host sun.security...

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Dear Mathworks support team,
whenever I try to install Mathlab R2019b the installation fails when using "Log in with a MathWorks account".
The error given says "Error: Unable to connect to host.sun.securityValidatorException: PKIX path building failed..."
Is there any way how to solve this issue?
Best regards,
George
  4 Comments
Martin Nørgaard
Martin Nørgaard on 4 Mar 2020
I tried Paul De Meulenaeres exact actions on a Windows Server 2019 and it worked.
  1. Tried installing R2019b, ("PKIX path building failed ...")
  2. Deleted temp folder created by the installer.
  3. Installed Java 8 U 241
  4. Rebooted
  5. Ran R2019b installer again
  6. No issues, where the error showed before.

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Answers (2)

rai7aeLa
rai7aeLa on 2 Oct 2019
Solved it. Install Java manually from java.com. The JRE included in the Matlab Installer seems to be broken.
  5 Comments
Marty556
Marty556 on 24 Nov 2019
Thank you, rai7aeLa, your solution (also) worked for me. I first deleted the _temp folder already created by the Matlab installer, then installed Java jre1.8.0_231 and rebooted the machine. Afterwards, the Matlab installation succeeded.
In contrast, the often suggested standard fix of deactivating Antivirus protection and/or changing Firewall settings had done nothing at all.

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Keegan Freeman
Keegan Freeman on 13 Jan 2020
I updated my java JRE via java.com and it correctly installed afterwards

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