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Developer(s) Petter Nordahl-Hagen (Formerly Petter Nordahl)
Initial release May 28, 1997; 17 years ago (1997-05-28)
Stable release 1.00 / February 1, 2014; 5 months ago (2014-02-01)
Written in C
Operating system Linux
Available in English
Type Data recovery
License GPLv2

chntpw is a software utility for resetting or blanking local passwords used by Windows NT, 2000, XP, Vista, and 7. It does this by editing the SAM database where Windows stores password hashes.

It is included in many security focused Linux distributions such as BackTrack.

For the software's 10th anniversary, the author changed the license from a non-commercial one to the GNU General Public License (GPL) Version 2.[1]


  1. ^ The Offline NT Password Editor History

External links[edit]