I have a 2003 sp1 fully patched server. I have two interfaces the server has a hostname=server1 (type hostname at a prompt) the server has a FQDN of server1.mydomain.com with IP address 1.1.1.1 in addition it has a secondary IP address on that server whos FQDN is server2.mydomain.com with IP address 1.1.1.2 ping server1 = works net view \server1 = works net view \1.1.1.1 = works ping server2 = works net view \server2 = "System error 5 has occurred. Access is denied." (I am logged on as admin on the box that has the ip address) net view \server2.mydomain.com = fails net use * \server2.mydomain.com = fails (I get prompted for the username and then System error 1326 has occurred.) net view \1.1.1.2 = works net use * \1.1.1.2 =works nslookup server2.mydomain.com returns 1.1.1.2 Why does this happen? Any time the FQDN does not match the HOSTNAME then NET XXX failes. Thanks in advance. links to support info helpful.