In this document, describes how to clone a Windows server 2008, using the Sysprep utility, as NewSID development has been discontinued. First of all, I show the official links of the application: What is Sysprep: HTTP://technet.microsoft.com/en-us/library/cc721940.aspx How Sysprep Works: HTTP://technet.microsoft.com/en-us/library/cc766514.aspx Command-line parameters: HTTP://technet.microsoft.com/en-us/library/cc721973.aspx I think that today everyone knows what Sysprep is and that its use is mandatory whenever we are going to clone any machine, whether it's a server or a post, whether physical or virtual, all machines must have a different SID, this is what Sysprep does, prepare the machine with a different SID and give us the possibility to change the name.