Aug 16 2007

Cracking Windows Passwords

_lock It seems like many people are in need of resetting or cracking forgotten passwords lately so I decided to find a good Password Cracking program. After trying out a few I like Ophcrack live CD the best for passwords under 14 characters.

Ophcrack is a Windows password cracker based on rainbow tables. It is a very efficient implementation of rainbow tables done by the inventors of the method. It comes with a GTK+ Graphical User Interface and runs on Windows, Mac OS X (Intel CPU) as well as on Linux.

Get the live CD Here, then burn the .ISO file to a CD Click here for a good burning program

Now restart your computer and boot from the Live CD.


When Ophcrack finishing booting you will be presented with a list of all of the accounts on the computer. Then click Launch to start the program.


Depending on the difficulty of your password it could take a few seconds to a couple minutes. Then right down the password remove the CD and reboot back into Windows and enter your password.

Then create a password reset disk for the next time.

Update 1-15-08 For everyone having problems with Ophcrack Check out Offline NT Password Editor. Below

Crack Windows Passwords with Offline NT Password Editor

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    28 Comments on this post


    1. Vista Revisited - » Reset A Lost Vista Login Password wrote:

      […] Cracking Windows Passwords […]

      August 16th, 2007 at 9:30 pm
    2. Vista Revisited - » Create A Vista Password Reset Disk wrote:

      […] Cracking Windows Passwords […]

      August 17th, 2007 at 11:46 am
    3. Reset/crack a forgotten Windows logon password | PC Memoirs wrote:

      […] that are able to crack passwords, but I have used only one successfully – Ophcrack (thanks to Vista Revisited). Ophcrack is a Windows password cracker based on rainbow tables. It is one of the best programs […]

      January 2nd, 2009 at 7:36 am
    1. Wahoo said:

      Thank you for sharing!

      October 7th, 2007 at 12:51 am
    2. yasar said:

      hey hi
      i had used this but i m unable to get my password as it shows nthash to be used
      how i m going to use this nthash table as it say all lmhashs are empty
      plz suggest

      November 6th, 2007 at 3:14 pm
    3. Kevin said:

      @ yasar, Is your password over 14 characters? I’m not sure why your having problems. You may want to check out the Ophcrack forums at
      They may be able to help you more here.

      November 6th, 2007 at 7:44 pm
    4. jen said:

      (As I’m finding out) ror Vista, you have to use the NTHASH tables, which are not included for free with Ophcrack.

      I see the table is available to purchase for $240 from Objectif S?curit? (

      I’d love to find a free version of the NTHASH tables, or someone who can provide a 1-time use service for it.


      December 6th, 2007 at 12:13 pm
    5. Saaid said:

      im having the same problem..i have windows vista and it sayz. “all Lm hashes are empty, please use NThash tables to crack remaining hashes”. any other suggestionz?

      January 3rd, 2008 at 1:43 am
    6. Ant said:

      How log is this supposed to take I get stuck at the floppy drive part

      Floppy drive(s):fd0 is .44M

      Although this laptop has no floppy drive

      January 3rd, 2008 at 3:36 am
    7. Kevin said:

      @ Saaid, I’m not sure why your having those problems but try
      they might be able to provide more help for you.

      January 3rd, 2008 at 6:23 pm
    8. Kevin said:

      @ Ant, I?m not sure why your having problems. the last time I tried it it only took about 20 minutes to crack.You may want to check out the Ophcrack forums at
      They may be able to help you more here.
      Mabe they can be of more help. sorry.

      January 3rd, 2008 at 6:36 pm
    9. kevin said:

      ophcrack dosent work with windows vista does anyone know of an alternative program for vista

      February 21st, 2008 at 11:42 pm
    10. Kevin said:
      February 22nd, 2008 at 6:15 am
    11. answers said:


      I was facing the ?All Lm hashes are empty, please use NThash tables to crack the remaining hashes? problem.

      This post details what I did to get the password on my Vista machine:

      Worked for me.

      April 22nd, 2008 at 4:48 pm
    12. Kevin said:

      @ answers that Offline NT Password & Registry Editor rocks, it works every time.

      April 23rd, 2008 at 12:55 pm
    13. laptop repairs said:

      It took too long to download. Do you have smaller software?

      September 2nd, 2008 at 6:29 pm
    14. Kevin said:
      September 2nd, 2008 at 9:50 pm
    15. lineza said:

      i found a vista cracking video in this webpage.

      November 25th, 2008 at 7:24 pm
    16. Gurmit Singh said:

      I have no words to thank you for this valuable CD. it worked like a charm.

      May 23rd, 2009 at 1:53 pm
    17. Kevin said:

      @ Gurmit, Thanks for visiting.


      May 24th, 2009 at 7:31 pm
    18. harsh gola said:

      we can say nothing is impossible

      March 1st, 2011 at 8:57 am
    19. Robin said:

      any suggestions for a password that is 16 characters long?

      August 17th, 2011 at 5:35 pm
    20. Winrar Free said:

      I used to read you blog frequently, I can’t believe I ever stopped! Now I remember what got me enamored hooked overall.

      December 30th, 2012 at 6:08 pm
    21. said:

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      I’m definitely enjoying the information. I’m bookmarking
      and will be tweeting this to my followers!

      Outstanding blog and amazing style and design.

      April 23rd, 2013 at 4:21 am
    22. internet marketing consulting said:

      Hello to all, how is all, I think every one is getting
      more from this web site, and your views are
      pleasant in support of new people.

      April 25th, 2013 at 6:14 pm
    23. Maximilian said:

      Your way of explaining everything in this post is really good, every one can without difficulty be aware of it, Thanks a lot.

      July 7th, 2013 at 8:30 am
    24. 6 sigma said:

      Heya! I just wanted to ask if you ever have any issues with
      hackers? My last blog (wordpress) was hacked and I ended
      up losing a few months of hard work due to no back up.
      Do you have any methods to prevent hackers?

      February 11th, 2014 at 4:07 am
    25. Kevin said:

      Use strong passwords and keep plugins updated.

      February 12th, 2014 at 9:18 am


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