[Samba] Windows XP suddenly can't login to PDC

Micha Kersloot micha at kovoks.nl
Tue Jan 24 10:36:42 GMT 2006


I've got a Samba 3.0.2a PDC running for some time now (like more than a
year) with MS Windows XP clients. But suddenly on January 23 2006 none
of the clients where able to login anymore. The error on the client was
(translated from dutch):
Unable to connect to domain server.

The logfile on the samba side showed:
[2006/01/23 11:36:30, 2] lib/smbldap.c:smbldap_open_connection(722)
  smbldap_open_connection: connection opened
[2006/01/23 11:36:30, 3] lib/smbldap.c:smbldap_connect_system(905)
  ldap_connect_system: succesful connection to the LDAP server
[2006/01/23 11:36:30, 2] passdb/pdb_ldap.c:init_sam_from_ldap(640)
  init_sam_from_ldap: Entry found for user: computer3$
[2006/01/23 11:36:30, 3] smbd/sec_ctx.c:pop_sec_ctx(386)
  pop_sec_ctx (65534, 65534) - sec_ctx_stack_ndx = 0
[2006/01/23 11:36:30, 0] libsmb/credentials.c:creds_server_check(159)
  creds_server_check: credentials check failed.
[2006/01/23 11:36:30, 0] rpc_server/srv_netlog_nt.c:_net_auth_2(424)
  _net_auth2: creds_server_check failed. Rejecting auth request from
client COMPUTER3 machine account COMPUTER3$

I was able to solve the problem by upgrading to 3.0.21a, and rejoining
the MS Windows XP clients to the domain. But as i have now idea what
caused this problem, i don't know if this suddenly could happen again.
Anyone an idea what was going on?

Met vriendelijke groet,

Micha Kersloot

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