RDS Trust relationship issue

Question

Hi,
We have 3 domains
DOM1.domain.local (top domain)
DOM2.DOM1.domain.local (sub domain)
DOM3.DOM1.domain.local (sub domain)
When we setup a brand new RDS 2012 server in DOM2 we can't add users from DOM3 and vica versa.
When we install a RDS 2012 server in DOM1 we can't add users from DOM2 and DOM3.
The error message says that the network path was not found. And to check for a two-way trust. 
We can't change settings on the trust relationship, because it is a child domain, it will always be a two-way trust. (the validation works without any problem)
Adding users from the other subdomain to the local group "Remote Desktop Users" isn't a problem. But that doesn't work any more in server 2012.
Anyone an idea?
Regards
Stijn

Answer 1

Hi,
After referring your post, I can understand that you can’t able to add users from another domain.
Can cross-domain user can able to login successfully?
In your situation, I will suggest you to change Trust type to cross-forest trust.
Understanding when to Create a Forest Trust:
http://technet.microsoft.com/en-us/library/cc771397.aspx
How to Configure Cross-Forest Administration:
http://technet.microsoft.com/en-us/library/bb232078(v=exchg.80).aspx
Refer below post (Answered By :Mark McNichols):
http://social.technet.microsoft.com/Forums/windowsserver/en-US/b243ec10-ae0c-4501-94b7-acd3a4d1e90e/rds-and-sid-error-with-twoway-trust
The article which is described in above post by Mark McNichols (KB972133):
http://support.microsoft.com/kb/972133
Might This Helps!
Thanks.