Active Directory Forest Trust

Question

Hi,

Would a forest trust between a child domain and another forest possible? We have a domain a.com, its child b.a.com and then another forest c.com.

I understand i can have forest trust between a.com and c.com , but is it possible to have forest trust setup between DC at b.a.com and c.com?

Thanks,

Answer 1

Hi,
A forest trust can only be created between a forest root domain in one forest and a forest root domain in another forest.
An external trust can be cteated in your situation.
Creating External Trusts:https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/cc816837(v=ws.10)?redirectedfrom=MSDN
Create a Forest Trust:https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2003/cc773010(v=ws.10)?redirectedfrom=MSDN
Best Regards,

Answer 2

Thanks FanFan for the answer.