Lync 2013 implementation in Child domain

Dear All,

I have parent and child domain model in my environment, I prepare the AD in parent and then I prepare it in child, now I’m trying to find (csadministrator and other RTC groups) in child domain but I didn’t!? all groups appear in parent domain, Lync will be installed and use in my child domain.

Is there any steps I have to do it?

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Mohammed HamadaSenior IT ConsultantCommented:
I think you will have to enable Lync setup for the child domain as well so it would create all the cs users and groups on it.

You can do so by applying the following cmdlet on lync management shell
Enable-CsAdDomain -Domain
RhalaAuthor Commented:
hi Mohammed,

i did that, it's not working...
Mohammed HamadaSenior IT ConsultantCommented:
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Mai Ali (MVP)Senior Infrastructure ConsultantCommented:
you can run this command to prepare the child domain however it is better to specify the FQDN of a Domain controller for the ChildDomain
Enable-CSAdDomain -Domain -DomainController <ChildDomainControllerFQDN> -Verbose -Confirm:$false -Report "C:\LyncLogs\[date_time].html"

However if your Lync deployment is only in the root Domain you are not required to prepare the child Domain

you can also simply insert the Lync media on the Child Domain controller and run the AD preparation wizard from there
RhalaAuthor Commented:
hi Mai,

i prepare the child domain from a domain member server (lync server) and the groups don't appear in the child active directory yet, Lync give me that the preparation done successfully but no groups appear?!!
Mai Ali (MVP)Senior Infrastructure ConsultantCommented:
you may have to manually add the RTCComponentUniversalServices group from the parent domain to the Windows Authorization Access group in the child domain.

Also you can refer below link
RhalaAuthor Commented:
dear Mai,

the link which you sent talk about prepare the domain, this have been done 100% successfully, the issue is i can't find the group in the child dmain.
RhalaAuthor Commented:
any update?? i need to solve the issue please
Mai Ali (MVP)Senior Infrastructure ConsultantCommented:
I know that you run the preparation successfully.
If you want to create Lync group on child, you need when you prepare AD and forest write child domain.
Enable-CsAdForest [-GroupDomain <FQDN of the domain in which to create the universal groups>]

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Jian An LimSolutions ArchitectCommented:
This behaviour is by design.
I have exact experience with Exchange 2010  

Lync forest prep will create RBAC group  (csadministrator and other RTC groups) 

domain prep will only assign the rights to RBAC group created on forest prep

YOu can add your domain user to to the forest level group  (\Admin1 to\csadministrator)

Issues will happen particularly for multiple domain, in this case, you need to go down the path to create custom RBAC for every child domain with scoping.
Jian An LimSolutions ArchitectCommented:
further information about custom RBAC
in particular to -ConfigScopes or -UserScopes to limit to the domain
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