Network software disconnects after about 20 minutes

Small network with a Windows 2008 server and a half dozen Windows 7 PCs. The setup is fairly simple in that an executable file is run from a mapped network drive on the server. We can see the file, it launches ok, and the program runs fine for somewhere between 15-25 minutes, and then just kicks out. We simultaneously lose the network connection, which is the root of the problem. Typically going into Computer and clicking the mapped drive brings it back, and then the program can be launched again to follow the same pattern. It is annoying because everything works fine for a while.
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Norm DickinsonGuruAsked:
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Bryant SchaperCommented:
What have your trouble shooting steps been and is the switch managed?

what about a continuous ping to see if the network drops, maybe to two locations, like google and the server.  Could be the switch too, plugs all tight?

How about error logs on both sides?
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nader alkahtaniNetwork EngineerCommented:
If you run program remotely it would stay in your RAM
 If drive mapped was disconnected then try this http://www.nextofwindows.com/how-to-fix-the-red-x-on-the-icon-of-mapped-network-drives-in-windows-7

 If you meant all Network connection was disconnected,  then tell me
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Norm DickinsonGuruAuthor Commented:
I resolved this issue with a firmware update on a network device. Thanks for trying to help!
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Norm DickinsonGuruAuthor Commented:
As part of the troubleshooting process, I posted the general question prior to arriving on site. One of the first things I tried upon arrival resolved the issue however, so I am closing the question.
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Windows Server 2008

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