Greetings, I've been having some issues establishing a two way interdomain trust between a samba server and an win2k8 active directory server. I've established a trust password and object and was able to create a trust relationship from the AD server to the samba server but I'm unable to from the Samba server to the AD server. The purpose of this is to enable ADMT to migrate the user accounts over to AD. While I have been able to query the ldap backend via ldifde and import the users it is only a last resort measure to do that. My aim is to bring the users over with the SID value stored in the AD SIDHistory attribute. (irrelevant details changed) net rpc trustdom list -S sambasvr -Usuper Password: Trusted domains list: none Trusting domains list: WIN2k8 S-1-5-21-954781686-2318084328-821430687 The issue is, to establish a trust from the samba server to the win2k8 server I end up with: net rpc trustdom establish WIN2K8 [2009/10/09 16:41:22, 0] rpc_client/cli_pipe.c:cli_nt_session_open(1451) cli_nt_session_open: cli_nt_create failed on pipe \wkssvc to machine WIN2K8. Error was NT_STATUS_ACCESS_DENIED [2009/10/09 16:41:22, 0] utils/net_rpc.c:rpc_trustdom_establish(4672) Couldn't not initialise wkssvc pipe That is after it asks for the trust account password which I provide correctly but if I dont do it correctly it will give the error "password incorrect" which says to me that its authenticating correctly and can tell the difference but there is something else preventing the samba server from trusting the AD server. I'd give the version that i'm using but i'm not able to see that currently from where I am. Its a Samba 3 of at least an age of 3 years at the very least. If it was the version that was causing the issue the next steps I will take is to extract the ldap accounts into an ldif file and use that file on another more recent release of samba 3 on a server seperate from the main network and attempt to establish the trust relationship two way that way. I can't fiddle too much with the original samba/ldap server due to it being a critical server. If I could be pointed in the right direction or advised on what might be the cause of the error I'd be very much appreciated. Ben W