Resolving javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed Error?

Question

Edit :- Tried to format the question and accepted answer in more presentable way at mine Blog

Here is the original issue.

Answer 1

For me, this error appeared too while trying to connect to a process behind an NGINX reverse proxy which was handling the SSL.

It turned out the problem was a certificate without the entire certificate chain concatenated. When I added intermediate certs, the problem was solved.

Hope this helps.