I have a BackupExec 12.5 with latest hotfix, i have installed remote agent in either node. If i can browse the node of cluster and the browse succeed, but if i browse the name of cluster reosurce i obtain "Authentication Failed" The username that i utilized for acces is the Administrator of Active Directory.
Make sure the cluster resource name being used is correct, try using virtual ip to expand the resource, You can do so by using user defined selections. This could be a problem with name resolution, or connectivity. Also, make sure ping and telnet on port 1000 works for the virtual resource name.