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With an active VPN, one client no longer browsing remote server.

Posted on 2005-04-26
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Last Modified: 2010-04-12
We have an active and working VPN connection between Denver and Milwaukee using a Watchguard 5 on both ends.  There is a server in Milwaukee that serves as both Exchange server and file server.  In Denver there are only client boxes and they all plug into individual ports on the Watchguard 5.

This solution has worked fine for over a year.  The Denver clients have all been able to properly retrieve email from the Milwaukee Exchange server and have also been able to map and access the Milwaukee Data drive.  About a week ago, only one of the clients began have problems with refreshing email from Exchange - with some parts of the process succeeding and others not.  During this same week there was a bit of a slowdown with accessing the data drive in Milwaukee.  

As of today, still only one machine in Denver is affected.  On the affected machine:

1.  We can ping the Milwaukee server using either the server name or the internal ip address

2.  When opening file manager, the Milwaukee data drive mapping to "M" appears active and displays the correct used/available diskspace of that drive.  But, when trying to open that folder we time out and get the error:
"An Error Occurred while reconnecting M: to \\server01\Data
Windows Microsoft Network:  The local device name is already in use.
This connection has not been restored"
    At this point the "M" drive mapping now indicates disconnected.

3.  When opening Outlook we do not receive a login error or a request for username and password.  Outlook appears to be opening properly for a few moments and then the "retrieving data" dialog box appears.  Progress seems to be indicated by the moving bar for about 5-10 minutes, but it eventually becomes clear that it has hung.  After finally giving up on the refresh, cancelling the retrieval gives us the "cannot display folder" message.

This same machine can surf the internet with no apparent difficulties or slowdowns.  No changes to the machine, or the server, or the vpn settings were ever made to create this problem.

QUESTION:
Is it possible that the network card on this machine is dieing; still working well enough to find view the web, the Milwaukee drives and the Exchange account, but not working well enough to actually work with the folders and exchange the data?  

Or, any other suggestions?

FYI - I have already tried changing out all connectors and ports with other machines.  Also, I can access all services correctly as this user when doing so from a different machine.

Well -  I threw in a new nic card and no such luck.
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Question by:cbns
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lrmoore earned 2000 total points
ID: 13870223
>I threw in a new nic card
My first instinct was to suggest rebooting, but with new hardware added, I'm going to assume that is a non-issue.

My next thought would be a good AV/spyware scrubbing. Use an external source that is different from your normal stuff. Start with housecall from Trendmicro:  http://housecall.trendmicro.com

Do you have Microsoft Anti-Spyware Beta? It's free and one of the best right now.
http://www.microsoft.com/downloads/details.aspx?FamilyID=321cd7a2-6a57-4c57-a8bd-dbf62eda9671&displaylang=en

You might also try resetting tcp/ip stack on the client. XP?

How to reset Internet Protocol (TCP/IP) in Windows XP:
http://support.microsoft.com/?kbid=299357

Network troubleshooting

============
Hidden in Windows XP's System Information utility is a very good tool for getting a lot more information about what's going on. Go to Start | All Programs | Accessories | System Tools | System Information. Then choose Net Diagnostics from the Tools menu. The program will ping your DNS servers, gateways, SMTP and POP3 mail servers, and proxies; test your modem and network adapters; and supply very detailed reports about your settings, as well as which tests passed and which failed.
============

How to determine and recover from Winsock2 corruption:
http://support.microsoft.com/?kbid=811259
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LVL 79

Expert Comment

by:lrmoore
ID: 13870239
More resources:

You may receive the "The local device name is already in use" error message when you try to restore a network mapping connection to a shared network folder on a Windows XP-based client
http://support.microsoft.com/default.aspx?scid=kb;en-us;890413

"Local Device Name Is Already In Use" Error Message When You Save to Mapped Drive
http://support.microsoft.com/default.aspx?scid=kb;en-us;317021
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Author Comment

by:cbns
ID: 13898656
Terrific input Irmoore.  Unfortunately non of it solved the problem.  I solved it by finally giving up and rebooting the server itself; something I was loath to do since it is old and overworked, and because the affected user could work fine from any other remote machine I assumed this was not a permissions issue.
 
At any rate - your feedback was very educational and this seems like a freak incident, so you deserve the points.  

If you have any comments on what might have caused the server to apparently limit this user (only from the one machine) to essentially directory listing rights only, I would like to hear them.  

Thanks, Mike

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