HI I have an issue with our samba share where some XP users could not connect to the share anymore. I traced it to a corrupted /var/cache/samba/idmap_cache.tdb and winbind_idmap.tdb. The problem is that we dont have backup of the .tdb files. I did, however, found a solution but not positive it will work. Has anyone have had this issue before and had a resolution for it? Below is a solution I found online and the errors found in /var/log/samba/winbind-idmap.log Thanks in advance. Procedure for rebuilding db files of Samba: 1. Stopped the services service smb stop service winbind stop 1. Removed these files rm -rf /etc/samba/secrets.tdb rm -rf /etc/samba/smbpasswd rm -rf /var/cache/samba/winbind_idmap.tdb 1. Rejoined the domain net rpc join -W DOMAIN -Uadministrator%password 1. Restarted the services service smb start service windbind start 1. All these command were succesful wbinfo -u wbinfo -g getent passwd #cat /var/log/samba/winbindd-idmap.log [2011/04/22 18:52:28, 0] lib/util_tdb.c:tdb_log(664) tdb(/var/cache/samba/winbindd_idmap.tdb): tdb_rec_read bad magic 0x42424242 at offset=25896 [2011/04/22 18:52:28, 0] lib/util_tdb.c:tdb_log(664) tdb(/var/cache/samba/winbindd_idmap.tdb): tdb_rec_read bad magic 0x42424242 at offset=25896 [2011/04/22 18:52:28, 0] lib/util_tdb.c:tdb_log(664) tdb(/var/cache/samba/winbindd_idmap.tdb): tdb_rec_read bad magic 0x42424242 at offset=25984 [2011/04/22 18:52:28, 0] lib/util_tdb.c:tdb_log(664) tdb(/var/cache/samba/winbindd_idmap.tdb): tdb_rec_read bad magic 0x42424242 at offset=25896 [2011/04/22 18:52:28, 0] nsswitch/idmap_tdb.c:idmap_tdb_set_mapping(971) Error storing SID -> ID: Corrupt database [2011/04/22 18:54:48, 0] lib/util_tdb.c:tdb_log(664) tdb(/var/cache/samba/idmap_cache.tdb): tdb_rec_read bad magic 0x42424242 at offset=35648 [2011/04/22 18:54:48, 0] lib/util_tdb.c:tdb_log(664) tdb(/var/cache/samba/idmap_cache.tdb): tdb_rec_read bad magic 0x42424242 at offset=35648 [2011/04/22 18:54:56, 0] lib/util_tdb.c:tdb_log(664) tdb(/var/cache/samba/winbindd_idmap.tdb): tdb_rec_read bad magic 0xd9fee666 at offset=25720 [2011/04/22 18:54:56, 0] lib/util_tdb.c:tdb_log(664) -- View this message in context: http://samba.2283325.n4.nabble.com/Samba-Winbind-Corrupted-tdb-file-tp3479810p3479810.html Sent from the Samba - General mailing list archive at Nabble.com.