--On Thursday, January 30, 2020 2:34 PM +0530 Vijay Kumar <pasumarthivijaykumar(a)gmail.com&gt; wrote: In the future, do not cross post to multiple lists. You were already told specifically to address your questions to openldap-technical(a)openldap.org. supportedLDAPVersion tracks the LDAP version (LDAP version 3), it does not track the underlying version of OpenLDAP. However, if you enable the monitor backend (See the man page for slapd-monitor(5)), the OpenLDAP version is contained in the monitoredInfo attribute: ldapsearch -x -LLL -H ldap:/// -s base -b cn=monitor monitoredInfo dn: cn=Monitor monitoredInfo: OpenLDAP: slapd 2.4.48 (Jan 29 2020 19:43:07) This of course requires that your program have permission to read from that database. --Quanah -- Quanah Gibson-Mount Product Architect Symas Corporation Packaged, certified, and supported LDAP solutions powered by OpenLDAP: <http://www.symas.com>