Dissconnected Mapped Network Drives

My network is a 12 computer domain with 1 file server and 1 Symantec AntiVirus Server.
A few days ago, all there mapped network drives were Disconnected. I can still ping the Server, but i cant pass any data through the lines. My research has pointed me to the Symantec server which was version 10.0 that caused this to disconnect. I was instructed to upgrade to 10.2 to solve this problem but still no positive results.
HELP!!!!

File Server/ Domain Controller: Windows server 2003 SP3
AV server: Windows server 2003 SP2
Workstations: XP Pro SP2
rablasAsked:
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arnoldCommented:
There is not enough information in your question to suggest a specific fix.
Check whether you have some firewall rules that prevent the traffic.
Check the event logs on the workstations as well as on the file server to see whether there are clues there.  Has the fileserver been rebooted in an attempt to correct the issue.
Can you from a workstation telnet and connect to port 445 of the fileserver?
Using netstat -an |find "LISTEN" to see whether ports 137,139,445 are being listened to on the server on all interfaces (0.0.0.0) versus having those bound to a specific IP.
Just a suggestion for best practices, you should make the second server a DC as well.
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vguzmanIT ManagerCommented:

Try this:
net use z: \\server\share$\ /user:username /persistent:yes
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vguzmanIT ManagerCommented:
or
net use \\remote\sharefolder password /u:domain\username /persistent:yes
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arnoldCommented:
Just to be clear /persistent:Yes option deals with whether the drive mapping will be permanent or whether it will be discarded upon logoff.

I do not believe the option will have any effect on "mapped drive disconnects"
A $ on the end of a share marks an administrative share and would require each user to have admin rights to map the share.
Did your suggestion for \\server\share$ meant to indicate an administrative share?
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vguzmanIT ManagerCommented:
no you can try something like:

net use \\servername\sharefolder password /u:domainname\username /persistent:yes

you can do a script to use this command at logon so it will "refresh" the connection everytime they login. You will need to disconnect the mapped drives first, use: net use /delete *

Also take a look at:

http://www.pctools.com/guides/registry/detail/891/

its for win 2000, xp for you might what to try it.
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rablasAuthor Commented:
I uninstalled the most recent updates on the server
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