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Offline NT Password Editor is a freeware utility that can change the password of the Administrator account. Useful when having lost the password for a machine or just gotten ones hands on a machine where no one knows the password.

There also exist utilities one can pay for:

• Login Recovery (Has a free low priority service)
• l0phtcrack (Is no longer supported)
• O&O BlueCon
• Administrator's Pak
• NTAccess
• LostPassword.com

There also exists tools for extracting the password hashes (the calculated value based on the password) from the local or a remote system, and tools for turning the calculated value into a password using bruteforce and dictionaries.

• Ophcrack
• John the Ripper
• Pwdump2
• Pwdump3
• Pwdump4
• Pwdump5

Related Reset Administrator password