Sysprep still needed but not because of duplicate SID

I was told a long time ago that you needed to run sysprep because of issues with joining two machines to the domain with the same machine Security Identifier (SID). While researching what you need to do with cloned AMI images on EC2 I found this.

https://blogs.technet.com/b/markrussinovich/archive/2009/11/03/3291024.aspx

I can attest to wsus getting messed up if you don’t run sysprep, but interesting to find out that duplicate SIDs is not an issue.

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