Server 2003 Not Visible on Network and Shares not Accessible

Server 2003 R2, sp2.  Nobody can see this machine on the network or get to any of its shares, even though everyone can ping it by name and remote desktop into it by name.

Other computers are running Vista and Windows 7 and they can all see each other.
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GeordieHConnect With a Mentor Commented:
Hi - Under the network card properties can you please check if File and Printer Sharing for Microsoft Networks is installed and ticked.

Hi - your question is a little confusing as you state that nobody can see the server on the network but say that you can ping it by name (which means that they can see it on the network).
I assume that you mean that when you go to Network Places you cannot see the server or it's shares?  Is the Computer Browser service running on the server?  If you go to the DOS prompt on any workstation and run net view \\[server name] where [server name] is the name of your windows 2003 server, do you get a list of available shares?  Is the Windows 2003 Server in the same workgroup as the other machines?
gateguardAuthor Commented:
The Server2003 machine name is SRV3.  It's IP address is

All of this works from any of the other machines on the network:

ping SRV3
Remote Desktop into SRV3
Remote Desktop into

But none of this works from any of the other machines on the network:

net view \\SRV3
net view \\
net use x: \\SRV3\share
net use x: \\\share

All machines are on a domain and SRV3 successfully joined the domain but the domain controller cannot see any of the shares on SRV3.
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gateguardAuthor Commented:
Thanks, Geordie, for your suggestion.

But the answer is yes, File and Printer Sharing for Microsoft Networks is already  installed and checked on the server and on the client trying to connect to the share.
jassavConnect With a Mentor Commented:
Check the computer browser service. This needs to be started in order for machines to be available.
gateguardAuthor Commented:
My problem was Symantec Endpoint Network Access Control.  But thanks for your help, everyone.  I really appreciate it.

Was this problem sporadic?  I am having this problem only occassionally.  Once every 4-6 days.  A reboot fixes the problem.
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