The Machine SID Duplication Myth

In usual form, Mark Russinovich debunks the machine SID duplication myth. ” The more I thought about it, the more I became convinced that machine SID duplication – having multiple computers with the same machine SID – doesn’t pose any problem, security or otherwise. I took my conclusion to the Windows security and deployment teams and no one could come up with a scenario where two systems with the same machine SID, whether in a Workgroup or a Domain, would cause an issue.”


  1. 2009-12-08 1:12 am
  2. 2009-12-08 11:18 am
  3. 2009-12-08 1:30 pm