Home > Tech Tip Tuesday > Offline NT Password & Registry Editor

Offline NT Password & Registry Editor


What is it?

  • This is a utility to reset the password of any user that has a valid (local) account on your Windows NT/2k/XP/Vista/Win7 etc system.
  • You do not need to know the old password to set a new one.
  • It works offline, that is, you have to shutdown your computer and boot off a floppydisk or CD or another system.
  • Will detect and offer to unlock locked or disabled out user accounts!
  • There is also a registry editor and other registry utilities that works under linux/unix, and can be used for other things than password editing.
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How does it work?

NT stores its user information, including crypted versions of the passwords, in a file called ‘sam’, usually found in \windows\system32\config. This file is a part of the registry, in a binary format previously undocumented, and not easily accessible. But thanks to a German(?) named B.D, I’ve now made a program that understands the registry.

This site provides CD and floppy images for end users to easily edit their forgotten passwords. But it also provides full source code and binary builds of the tools to allow others to use as they like for other purposes. Registry format documentation also available.

How do I get it?

Latest release is 100627 (2010-06-27)

The following is available for download and information:

2009-12-01

  • New site, official URL is now: http://pogostick.net/~pnh/ntpasswd/
  • All releases still contains old mail address, please note NEW mailaddress is pnh@pogostick.net. Old mailaddress vil be invalid after January 1st 2010.
  • No new release, 2008-08-02 is still newest. Hope to release new early 2010.
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