Hello. We have encountered an issue with Pega failing to bind to LDAP in a previously working environment since we upgraded from 7.3 to 8.3. Getting the error below in log. The only change is to Pega, no Tomcat or O/S changes. We confirmed the userid/pass is correct. No changes to Pega keystore file – in fact they imported the key from a working environment as part of troubleshooting. The Test connectivity tab also does not return successful. Any suggestions? Thanks in advance.

2020-01-28 10:04:32,746 [http-nio-8080-exec-9] [TABTHREAD1] [ ] [ EAOSApp:01.01.01] (.Data_Admin_AuthService.Action) ERROR Proprietary information hidden| Proprietary information hidden jkrishna - Data-Admin-AuthService WebLDAP1: Failed to bind to directory using bind information. Is the distinguished name similar to "cn=Admin"? javax.naming.CommunicationException: simple bind failed: ldapserver:636 [Root exception is 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]

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