“PKIX path building failed” and “unable to find valid certification path to requested target”
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Go to URL in your firefox browser, click on HTTPS certificate chain (next to URL address). Click
"more info" > "security" > "show certificate" > "details" > "export.."
. Pickup the name and choose file type example.cer. Now you have file with keystore and you have to add it to your JVM -
Determine location of cacerts files, eg.
C:\Program Files (x86)\Java\jre1.6.0_22\lib\security\cacerts.
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Next import the
example.cer
file into cacerts in command line: keytool -import -alias example -keystore C:\Program Files (x86)\Java\jre1.6.0_22\lib\security\cacerts -file example.cer
You will be asked for password which default is changeit
Restart your JVM/PC.
source: http://magicmonster.com/kb/prg/java/ssl/pkix_path_building_failed.html