Determining if the certificate is expired on the instanceIssue Do you see a simple bind error message when using the test connection link in the LDAP Server record? Review this article for more information. When the LDAP server certificate is expired on the instance or does not match the certificate currently being used by the LDAP server, it causes users to be unable to access the instance and the simple bind error message to be displayed. The video below provides a walkthrough to renew the certificate and resolve the simple bind error message: See the information below for additional contextCauseThe certificate currently on the instance has expired or the certificate associated with the LDAP server has changed.ResolutionContact the LDAP administrator to update the certificate for the associated LDAP server, and upload a new certificate to the instance. See the Upload a certificate to an instance documentation for steps on how to upload the certificate. Note: Check the Expiration notification checkbox within the certificate record to receive an email notification when the certificate is about to expire.