Unable to find valid certification path to requested target - error even after cert imported

Question

I have a Java client trying to access a server with a self-signed certificate.

When I try to Post to the server, I get the following error:

un

Answer 1

My problem was that a Cloud Access Security Broker, NetSkope, was installed on my work laptop through a software update. This was altering the certificate chain and I was still not able to connect to the server through my java client after importing the entire chain to my cacerts keystore. I disabled NetSkope and was able to successfully connect.