In response to my article about Microsoft’s free OS image preparation tools, a reader claimed that as a result of Mark Russinovich’s famous SID duplication myth article, Sysprep would no longer be required. Mark argued in detail why SID duplications are, contrary to a widespread opinion, no problem in Windows networks. Since Mark is such a famous figure, I believe many admins have read his article and came to the same wrong conclusion that the Sysprep tool has now become obsolete. I think that this a big misunderstanding. Thus, it is important to get a few things straight about the System Preparation tool.
First of all, those who read Mark’s article to the end will have noticed that he still recommends using Sysprep. The problem is that his article is quite long and, I guess, many admins missed that part. Second, I disagree with Mark that duplicate SIDs are not an issue. I will provide my arguments in the next article. Today, I will explain why sysprepping your master image is essential even if we assume for a moment that unique SIDs are not required.
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