Provided by: chntpw_1.0-1.1_amd64 bug


       sampasswd - reset passwords of users in the SAM user database


       sampasswd [options] -uuser <samfile>


       This  manual  page  documents briefly the sampasswd command.  This manual page was written
       for the Debian distribution because the original program does not have a manual page.

       sampasswd is a non-interactive command line utility  that  can  reset  a  user's  password
       and/or  the  user's  account  bits  from the SAM user database file of a Microsoft Windows
       system (Windows NT, 2000, XP, Vista, 7, 8.1, etc.).   This  file  is  usually  located  at
       \WINDOWS\system32\config\SAM on the file system of a Microsoft Windows Operating System

       On success, the program does not output any informatin and the exit code is 0.


       -h     Show summary of options.

       -r     Reset the user's password.

       -a     Reset  all  the  users. If this option is used there is no need to specify the next

       -u <user>
              User to change. The user value can be provided as a username, or a  RID  number  in
              hexadecimal   (if   the  username  is  preceded  with  '0x').  Usernames  including
              international characters will probably not work.

       -l     Lists the users in the SAM database.

       -H     Output human readable output. The program by default will print  a  parsable  table
              unless this option is used.

       -N     Do  not  allocate  more information, only allow the editing of existing values with
              same size.

       -E     Do not expand the hive file (safe mode).

       -t     Print debug information of allocated blocks.

       -v     Print verbose information and debug messages.


       sampasswd -r -u theboss
              Reset the password of a user named 'theboss', if found.

       sampasswd -r -u 0x3ea
              Reset the password of the user with RID '0x3a'.

       samusrgrp -r -a
              Reset the password of all the users in the Administrator's group (0x220)

       samusrgrp -r -f
              Reset the password of the administrative users with the lowest  RID  number.   This
              does  not include the built-in administrator (0x1f4) unless no other administrative
              user can be found in the database file.


       If the username  includes  international  (non-ASCII)  characters  the  program  will  not
       (usually) find it. Use the RID number instead.


       chntpwd, reged, samusrgrp
       You  will  find   more  information available on how this program works, in the text files
       /usr/share/doc/chntpw/README.txt and /usr/share/doc/chntpw/MANUAL.txt

       More    documentation    is    available    at     the     upstream's     author     site:


       This program was written by Petter N Hagen.

       This manual page was written by Javier Fernandez-Sanguino <>, for the Debian
       GNU/Linux system (but may be used by others).

                                         6th August 2014                             SAMPASSWD(8)