Microsoft KB Archive/251042

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Knowledge Base

Sysprep Does Not Change ACLs on Registry Keys

Article ID: 251042

Article Last Modified on 3/1/2007


  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Advanced Server
  • Microsoft Windows 2000 Professional Edition

This article was previously published under Q251042


When you clone a system by using the System Preparation tool (Sysprep.exe), Access Control Lists (ACLs) applied to registry keys are not changed during the mini-Setup wizard. When you view the permissions on keys on which the ACLs were modified, you may receive an "Account unknown" error message or the old Security ID may be displayed.

NOTE: This applies to ACLs that have been modified from the defaults before you ran Sysprep. For example, you created a local group and applied ACLs on the registry keys using this group.


The current versions of Sysprep do not change the ACL list applied to the registry.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

Keywords: kbhotfixserver kbqfe kbprb KB251042