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Can't install Eclipse plugins due to sun.security.validator.ValidatorException

  Sometimes eclipse cannot connect to marketplace or plugin sites for installing plugins because of security validator exception


Problem:

sun.security.validator.ValidatorException

or

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

 

Resolution:

  • tuststore does not contain the certificate of the SSL service you're connecting to
    • This is due to corporate environments where your workstation is intercepted by proxy, firewall or something that inspects https traffic.
    • or the jdk version does not include the SSL service you're connecting to. jdk release with certificates in the jre/lib/security/cacerts file. the certificates are increase while jdk version goes up

How To Solve

  1. Download Keystore Explorer and Install
  2. Open the application (Run as administrator)
  3. Examine > Examine SSL > Connection Settings
    1. SSL Host: google.com
    2. SSL Port: 443
    3. Click "OK"
      1. Click "PEM" and "Export"
      2. Save as "googlecert.crt"
  4. File > Open > C:\Program Files\Java\jdk1.8.0_261\jre\ lib\security\cacerts (JDK path)
    1. Enter the password: changeit
  5. Tools => Import trusted certificate > Select the "googlecert.crt" > Click "OK"
  6. Save the "cacerts" file.
  7. Repeat steps 6 through 9 for the JRE (C:\Program Files\Java\jre1.8.0_261\lib\security\ cacerts)
  8. Restart your PC.

Reference:

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