I have a problem with a customer who still has an NT4 domain!! Well they decided to migrate to a new domain and created a windows 2003 domain as a new forest. User migration was done but not computer migration. This was done by the customer himself.
The new Win2003 AD domain has some servers in it but most of the PC's are still in the NT4 domain & most of these PC's are windows XP. A two-way external trust has already been created between the NT4 domain and the 2003 domain.
Since the client PC's are in NT4 domain and need to access shared folders from the servers in windows 2003 domain the trust relationship is critical. Unfortunately, this is where the problem lies. The trust although seems to be working is behaving strangely. It works on some PC's and not on others.
The PC's where it doesn't work , we get the error "trust relationship between the primary domain and the trusted domain failed", when they try to access resources from 2003 domain. However from the same PC, the user can logon to the 2003 domain!!
What is going on with this trust? and what can be done to fix the issue?