I have a solution where I am trying to implement which involves using ACS SE to authenticate against two AD domains. There is a two way trust relationship between the two domains. I can see both domains under the external user databases, however currently I can authenticate against the domain the that server which the remote agent is on but not the other, wireless clients that are not getting authenticated are receiving the following message in ACS under failed attempts:
Authen session timed out: Challenge not provided by client.
Is there any thing to watch out fot when authenticating to multiply domains.