Some Users are unable to connect to Network shares and printers

I am supporting a company convention, We have a LAN setup in the convention center that we are working in. The LAN is connected to our company domain via VPN using a Juniper router.

On the LAN at the convention center I have a Windows Server 2003 R2 64Bit server joined to the Company domain. There are 2 printers and a shared folder on the server.

The Workstations are a variety of Windows XP, Windows 7 x64 and MAC OSX systems.

So far, of the 30 plus computers that are using these resources about 5 are unable to map to the printers or shares (theyare still able to map to the printers and shares at the office). These are only some XP and Win 7 computers the MACs work fine.

I can Ping the Server and the Printers from each of the workstations.

I can browse the domain and see all of thecompany shared resources just not those on the LAN here at the convention.

Any ideas?
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Donald BarkerManager, Endpoint SecurityAsked:
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mlchelpConnect With a Mentor Commented:
what are you using for DNS, is the primary DNS suffix correct in those PC's and have you added the server and printers to your dns server.

Whatt happens if you do a start run and type \\servername and hit enter, do you see the share and printers?
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peter197911Connect With a Mentor Commented:
These 5 machines are laptops i guess?
Maybe a ipconfig /flushdns on the laptops is an idea?
Just to make sure you use fresh dns records (and no cached ones)
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Donald BarkerManager, Endpoint SecurityAuthor Commented:
mlchelp,

 We areusing our company DNS servers and they are working for everyone else. They areeven working for thes 5users to getto the corporate network. When I use the start run \\server it times out and says it cannot locate the server yet I can ping the server by name. This also happens if I run \\IPADDRESS.

Peter197911,

Yes theyare laptops and yes I have flushed the DNS with no change. good suggestion though.
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mlchelpCommented:
have you created A records in DNS for the servers and printers?
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Donald BarkerManager, Endpoint SecurityAuthor Commented:
Yes, I am ableto ping all the required resources by name andget the apropriate ip addresses in return.
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mlchelpConnect With a Mentor Commented:
you must have some kind of firewall enabled on the PC's with the proble, make sure you turn off all local firewalls including Mcafee, trend nortons etc. I have seen this before with users having blackice installed. I know you would think the users wouldnt be able to see the devices on your corporate lan either but it seems to only affect local resources.
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Donald BarkerManager, Endpoint SecurityAuthor Commented:
We manage all firewall settings through Group Policy. and Symantec Endpoint Protection is managed via the SEP server. I have manually verified no additional FW software is installed.
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mlchelpConnect With a Mentor Commented:
Did you make sure that the local windows firewall is off. I have seen this many times, Just try disabling everything including SEP and see if it makes a difference,then you can turn it back on and figure out what ports you need to open.
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Donald BarkerManager, Endpoint SecurityAuthor Commented:
The convention has ended and none of these solutions was correct. They were looking at the simple possibilities and not digging in deep to come up with an answer. I have taken down the server ans boarded my plane home.

Thanks for the try.
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