child-parent domain interactive logon

Hello,

I have a W2k3 forest (2000 native) with a parent domain (A) and one child domain (B). I want to put my users (from LDAP) into domein A letting them to logon into B and C/D/E etc in future. A is an user-account domain, B a resource domain.

Both DC’s are W2k3 in 2000 native. A test user has been created into parent domain A. A Windows XP station is a member of child domain B. When the test user is trying to logon to child domain B using credentials of parent domain A I get a ‘user does not exist’ respons.

What am I doing wrong here? I’m a bit lost…

Any help welcome 😉