An Active Directory data store sometimes hangs the system. This problem can also occur when you are creating a new Active Directory data store.
Workaround. In the OpenSSO Enterprise Admin Console, disable LDAP Follows Referral for the Active Directory data store:
Click Access Control, top-level-realm, Data Stores, ActiveDirectory-data-store-name.
Uncheck Enabled for the LDAP Follows Referral.
Save your changes.