<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html;charset=UTF-8" http-equiv="Content-Type"> </head> <body bgcolor="#ffffff" text="#000000"> Hi I have a network mix OS of approx 30 machine. ( ie, OS as Xp, vista, Linux all flavour). I have a DNS and DHCP Services running on Linux box. Recently I added a Win server 2000 box in the network and also renamed the FQDN of some old box connected with the same network. Now when ever I try to access machine with Host name, it shows an error message as duplicate name exists on your network. Whereas I can successful access the same machine by IP, also the machine who's host name are not renamed , are accessible by name. My new FQDN contains 2 special character "_ " and "-".( eg hostname is as : Name_D1_Rhel5-64_IP.xx.com) whereas previous it was simple on the name of mountain( eg everest.xx.com). Now I am unable to figure out the cause of problem. Is it because of new win server machine or dns or use of the special char or something else, plz help. Note : I have central anti virus system (kaspersky), which is installed on Win Server 2000. But the client deployment fail because of this duplicate name network problem. Thanks Alok </body> </html>