Adding AD group to another AD group

Question

I'm trying to add an AD group to another AD group but in a different forest. There's a trust between these 2 domains.

$DomainA = "<domain>"
$DomainB = "<different domain>"
Add-ADGroupMember -Identity "<ad group name>" -Server $DomainA -Members "<ad group name>" -Server $DomainB

What is the best way to cross add the groups?

Error I receive: Add-ADGroupMember: Cannot bind parameter because parameter 'Server' is specified more than once. To provide multiple values to parameters that can accept multi ple values, use the array syntax.

Answer 1

Use the param server only once, either DomainA or DomainB.

Make sure the group names have their respective domains prefixed ie DomainA\GroupName.

As an example, GroupB in DomainB would become a member of GroupA in DomainA:

Add-ADGroupMember -Identity "DomainA\GroupA" -Members "DomainB\GroupB" -Server "DomainA"