Users from a different domain cannot login

Hello Everyone,

We have a sharepoint 2010 in domain A. Users are in domain A and domain B and there is a bi-directional trust between the two domains (belonging to 2 different forests).

Users in domain A have no problem accessing the SharePoint.

Users in domain B keep having IE prompting them for credentials and after 3 attempts lead them to a blank page.


The people picker tool can easily find users in domain B and then assign them permissions, but there seems to be an issue when authentication occurs.

So far there is no DNS or network issue has the site name is well resolved and a nslookup of the site returns the good information (right IP address).

Thank you for your help ! :)