Hello, Thx for your answer. I did not pay attention it was for 2.6x but why it’s working in 2.5.16 as I’ve the new attribut and it’s updated as I wanted, only the precision is not set !! There should be a default value or it’s at each login by default?? I was using the old overlay in 2.5.7 but I decided to move from it to source one during upgrade to 2.5.16 as attributes aren’t the same and on my production systems it was not enabled yet then it will be ready to move to 2.6x without having to do actions on old attribut to new one. Brgds, J-L.On 8 Feb 2024, at 14:44, Abdelkader Chelouah <a.chelouah@gmail.com> wrote: On 2/8/24 14:39, bourguijl@gmail.com wrote:Dears, I'm running openldap 2.5.16 in which I'm using lastbind feature included in source. To enable it, I read that 2 attributs should be inserted in DB config file side, in which I added : olcLastBind: TRUE olcLastBindPrecision: 3600 But it seems that olcLastBindPrecision isn't supported because when I did a slapcat of the configuration of the ldap instance in which both are added, I get following error message : UNKNOWN attributeDescription "OLCLASTBINDPRECISION" inserted. I removed it from my configuration and restarted the slapd then I discovered that attribut "pwdLastSuccess" is well updated but I don't know with which precision (default ??). So, my question is why this parameter isn't supported ? Is there something else to enable ? Thx in advance, Jean-Luc.Hello, It is only supported starting from OpenLDAP 2.6. If you want to used this attribute with OpenLDAP 2.5, you have to switch to lastbind overlay. Regards