I have 2 CAS and 2 MBX servers installed in the parent Root Domain with 2 child domains. I have added OUs to the clildren domains and they will not show up when trying to add a mailbox on the root domain server. I am unable to even see the new OUs. Also, if I try to create a user from Exchange, I cannot place them in the child domain OUs. Where is my design lacking here? I really need some help with this. Thanks in advance.

Lance Lingerfelt

• Merged by Mavis_HuangMicrosoft contingent staff, Moderator 4 hours 41 minutes ago duplicated

I have 2 CAS and 2 MBX servers installed in the parent Root Domain with 2 child domains. I have added OUs to the clildren domains and they will not show up when trying to add a mailbox on the root domain server. I am unable to even see the new OUs. Also, if I try to create a user from Exchange, I cannot place them in the child domain OUs. Where is my design lacking here? I really need some help with this. Thanks in advance.

Lance Lingerfelt

Hello

not show only the new ou?
new ou created in children domain root, or ou is children any ou ?

The new OU is in the Child Domain. I must have my permissions setup incorrectly. I am unable to create an OU under the Users OU in the child domain. OUs show up in the root domain fine, but only OU showing in the child domain is the Users OU.

Hello

users it`s a "container" and cant create "OU" for users children.
the new OU created in root in child domain?
and check AD replication and try create user from powershell to new OU.