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Changing and removing the Admin password

Windows security threats expert Kevin Beaver recommends a tool that can help you crack the Admin password in Windows Server 2003.

Is there a free program that can change or remove the Admin password in Windows Server 2003?
There's a free tool you can use to try to crack the password called Ophcrack. The only decent tools I've found for changing and removing are commercial products. Check out NTAccess for this.

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