I have 2 forests, A and B, connected with a 2 way trust over a VPN tunnel.
In Forest A, I have an RDP Server.
Users in Forest B can login to the RDP Server using their own domain credentials, but logon is slow as it authenticates back with the domain controllers in Forest B.
I have installed a Read Only Domain Controller (Forest B) in Forest A, hoping to speed up the authentication. However, when users that logon to the RDP server is still authenticating back to the old DC in Forest B, rather than the RODC in Forest A.
How can I make them authenticate to the RODC?
I have granted the users membership to "Allowed RODC Password Replication Group", as well as verified that their accounts are visible in the "Accounts whose passwords are stored in this Read-only Domain Controller".
I have also the domain controllers assigned correctly to the 2 Sites with correct subnets in Active Directory sites and services.