Three more things you shouldn’t do with Sysprep

Here are three more things you shouldn’t do when running Sysprep on a Windows Vista computer:

  1. Don’t run Sysprep on a computer that has been in use by users (i.e. only run Sysprep on new installs of Windows).
  2. Don’t run Sysprep on a computer that is joined to a domain (Sysprep will remove it from the domain).
  3. Don’t run Sysprep on a computer that has files that have been encrypted using EFS (unless you want to say goodbye to the content in these files forever!)


Mitch Tulloch was lead author for the Windows Vista Resource Kit from Microsoft Press, which is the book for IT pros who want to deploy, maintain and support Windows Vista in mid- and large-sized network environments. Mitch was also the author of Introducing Windows Server 2008 and technical project lead for the Microsoft Office Communications Server 2007 Resource Kit, both books also from Microsoft Press. For more information on these and other books by Mitch, see

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