Simple question: is it possible to have two active directory domains, one being parent to the other (a forest) and have two user accounts with the same login, one in each domain ?



  • Do you mean this: DomainA\user and DomainB.DomainA\user? Commented Jun 5, 2012 at 19:26
  • yes. That's what I mean. Just its DomainA.net/user and DomainB.DomainA.net/user and DomainC.DomainA.net/user.
    – Fabio
    Commented Jun 11, 2012 at 13:28

1 Answer 1


You can - but it's fairly silly to do that. In AD, domains in the same tree will trust each other, so you can assign rights for resources in Domain A to a user in Domain B, and vice-versa. No need to make accounts with the same names.

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