Can some-one please assist? I am getting the following error message when ever a user attempts to change their passwd using smbpasswd : Connecting to 127.0.0.1 at port 139 machine 127.0.0.1 rejected the tconX on the IPC$ share. Error was : ERRSRV - ERR badpw (Bad password - name/password pair in a Tree Connect or Session Setup are invalid.). Failed to change password for student1. The passwd can be changed by root but not a user. I do NOT have any hosts deny or hosts allow entries. I have looked through doco's and can't find any reference to ERR badpw , even though it is obvious what it means, it is not obvious where the problem lies. The password is the correct one. A pointer to doco covering this would be greatly appreciated. smb.conf is below : [global] log level = 3 max log size = 500 log file = /usr/local/samba/var/log.%m netbios name = lecsydmk01 server string = Samba %v on %L workgroup = LECAU security = domain domain logons = yes password server = lecsyd01 encrypt passwords = yes os level = 15 local master = no lm announce = no guest ok = no valid users = @samba username map = /usr/local/samba/lib/username_map password level = 5 [homes] browseable = no writeable = yes veto files = /.?*/ delete veto files = no I have tried everything I can think of but just can't work out why the loopback interface is rejecting as a bad password. The log files show that it has rejected user 'nobody', but why is 'nobody' being validated (or who-ever I set up as a guest account). The users have valid smb and unix passwds! Log file is below if you are interested : [2000/09/18 15:18:29, 3] smbd/process.c:process_smb(618) Transaction 1 of length 168 [2000/09/18 15:18:29, 3] smbd/process.c:switch_message(448) switch message SMBnegprot (pid 21442) [2000/09/18 15:18:29, 3] smbd/negprot.c:reply_negprot(341) Requested protocol [PC NETWORK PROGRAM 1.0] [2000/09/18 15:18:29, 3] smbd/negprot.c:reply_negprot(341) Requested protocol [MICROSOFT NETWORKS 1.03] [2000/09/18 15:18:29, 3] smbd/negprot.c:reply_negprot(341) Requested protocol [MICROSOFT NETWORKS 3.0] [2000/09/18 15:18:29, 3] smbd/negprot.c:reply_negprot(341) Requested protocol [LANMAN1.0] [2000/09/18 15:18:29, 3] smbd/negprot.c:reply_negprot(341) Requested protocol [LM1.2X002] [2000/09/18 15:18:29, 3] smbd/negprot.c:reply_negprot(341) Requested protocol [Samba] [2000/09/18 15:18:29, 3] smbd/negprot.c:reply_negprot(424) Selected protocol NT LANMAN 1.0 [2000/09/18 15:18:29, 3] smbd/process.c:process_smb(618) Transaction 2 of length 78 [2000/09/18 15:18:29, 3] smbd/process.c:switch_message(448) switch message SMBsesssetupX (pid 21442) [2000/09/18 15:18:29, 3] smbd/reply.c:reply_sesssetup_and_X(805) Domain=[] NativeOS=[Unix] NativeLanMan=[Samba] [2000/09/18 15:18:29, 3] smbd/reply.c:reply_sesssetup_and_X(809) sesssetupX:name=[] [2000/09/18 15:18:29, 3] smbd/password.c:setup_groups(192) nobody is in 1 groups: 1 [2000/09/18 15:18:29, 3] smbd/password.c:register_vuid(270) uid -2 registered to name nobody [2000/09/18 15:18:29, 3] smbd/password.c:register_vuid(272) Clearing default real name [2000/09/18 15:18:29, 3] smbd/process.c:process_smb(618) Transaction 3 of length 69 [2000/09/18 15:18:29, 3] smbd/process.c:switch_message(448) switch message SMBtconX (pid 21442) [2000/09/18 15:18:29, 2] lib/access.c:check_access(258) Allowed connection from localhost (127.0.0.1) [2000/09/18 15:18:29, 3] smbd/password.c:authorise_login(816) ACCEPTED: guest account and guest ok [2000/09/18 15:18:29, 0] smbd/password.c:authorise_login(826) rejected invalid user nobody [2000/09/18 15:18:29, 2] smbd/service.c:make_connection(284) Invalid username/password for ipc$