In the Admin Console Active Directory groups can be added, but the members are not appearing in the group. Clicking on Display Members and does not display any members in the Named Users dialog box. However, the members show up in the group in Active Directory. The individual members of the groups can be added in the Admin Console under Windows Account.
Another issue which may be related is that participant users in a group are not able to see the forms they have access rights to submit. When they log on to forms and click Start Process the page is blank. However, if the participant users are added individually they are able to see the form and submit it.