I have serveral PCs and servers that are not properly advertising themselves in the browser and cannot be seen using NET VIEW. I can connect to these machines through explorer by \\servername and I can ping and run nslookup searches by IP and name.
I have verified that all of these machines are pointing to valid WINS and DNS addresses. There do no appear to be any problems with WINS or DNS. In addition, I have verified that Windows Firewall is disabled on these machines.
I am running Windows XP clients with Windows 2003 Servers in two sites. Site communication is working fine, and both intersite and intrasite machines can connect normally. Why would some machines advertise in the browser and others not?