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POChange local administrator password in C#
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  1. POChange local administrator password in C#
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    copied!<p>I am looking for a way to change the password of a local user account (local Administrator) on a Windows (XP in this case) machine. I have read the <a href="http://www.codeproject.com/KB/threads/Reset-Administrator-Pass.aspx" rel="noreferrer">CodeProject article</a> about one way to do this, but this just doesn't seem 'clean'. </p> <p>I can see that this is <a href="http://www.microsoft.com/technet/scriptcenter/resources/qanda/oct04/hey1015.mspx" rel="noreferrer">possible to do with WMI</a>, so that might be the answer, but I can't figure out how to use the WinNT WMI namespace with ManagementObject. When I try the following code it throws an "Invalid Parameter" exception.</p> <pre><code>public static void ResetPassword(string computerName, string username, string newPassword){ ManagementObject managementObject = new ManagementObject("WinNT://" + computerName + "/" + username); // Throws Exception object[] newpasswordObj = {newPassword}; managementObject.InvokeMethod("SetPassword", newpasswordObj); } </code></pre> <p>Is there a better way to do this? (I'm using .NET 3.5)</p> <p><strong>Edit:</strong> Thanks Ely for pointing me in the right direction. Here is the code I ended up using:</p> <pre><code>public static void ResetPassword(string computerName, string username, string newPassword) { DirectoryEntry directoryEntry = new DirectoryEntry(string.Format("WinNT://{0}/{1}", computerName, username)); directoryEntry.Invoke("SetPassword", newPassword); } </code></pre>
 

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