Hi All, Following everyone's help our eduroam system is up and running by the target date - Many thanks, particularly to Alan and Ivan. I'm now trying to configure it *properly* I have, in the ldap module configuration: chase_referrals = yes rebind = yes I'm running version 2.1.6 on Solaris doing lookups against Active Directory. I get, in the debug: rlm_ldap: Bind was successful rlm_ldap: performing search in dc=ad, dc=hud, dc=ac, dc=uk, with filter (sAMAccountName=mytestusername) rlm_ldap: ldap_search() failed: Operations error rlm_ldap::ldap_groupcmp: search failed Has anyone got latest information on what causes this or how to fix it. I have a workaround but it's not ideal. I assume trying to get more helpful information out of Microsoft AD is pretty futile but has anyone any clues as to what "operations error" realy means? The workaround is to specify a container in the search but as the number of possible containers for a search increases things rapidly begin to get out of hand ..... Regards, Leighton --- This transmission is confidential and may be legally privileged. If you receive it in error, please notify us immediately by e-mail and remove it from your system. If the content of this e-mail does not relate to the business of the University of Huddersfield, then we do not endorse it and will accept no liability.