I am trying to set up the trusted application link between Confluence and JIRA so that I can list the Issues from JIRA on the Confluence page but I am getting the following error Unable to retrieve the application's certificate: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. I have looked up the error on the forums and such and have done everything that the forums suggest, but I'm still getting the error. Both confluence and JIRA use SSL and have tried using the same Cert as well as different Certs..