I received this error while trying to start up an application:
Sun.security.validator.ValidatorException: PKIX path validation failed:
java.security.cert.C
Use cli utility keytool from java software distribution for import (and trust!) needed certificates
Sample:
From cli change dir to jre\bin
Check keystore (file found in jre\bin directory)
keytool -list -keystore ..\lib\security\cacerts
Enter keystore password: changeit
Download and save all certificates chain from needed server.
Add certificates (before need to remove "read-only" attribute on file "..\lib\security\cacerts") keytool -alias REPLACE_TO_ANY_UNIQ_NAME -import -keystore ..\lib\security\cacerts -file "r:\root.crt"
accidentally I found such a simple tip. Other solutions require the use of InstallCert.Java and JDK
source: http://www.java-samples.com/showtutorial.php?tutorialid=210