Installation Failure – Multiple Domains

Problem:
Installing Group Chat into a different AD Domain than where OCS Groups exist will result in the following error:

* Error Applying Changes - Group 'RTCComponentUniversalServices‘ is not
found in Active Directory

Cause:
Group Chat installer will only search for OCS Groups using the default
naming context of current domain.

Resolution:
1) Create temporary set of OCS Groups that mirror the real OCS Groups and their membership in Active Directory Domain where Group Chat will be installed.
2) Create new security group called RTCGroupChatServices in domain where Group Chat
will be installed, and add the Group Chat service accounts to the membership of this group
3) Add the RTCGroupChatServices group to Message Queuing service with Full Control rights
4) Install Group Chat