"You do not have access rights to" error when opening network files

Hello all, We have just upgraded most of our systems to Windows 7. After installing AutoCAD, the users tried to open some drawings from their profile folders stored on the network, but receive an error saying "You do not have access rights to \\server\ect. See your administrator for access to this folder". On the computer in the classroom that still has Windows XP on it, they are able to open the files in the same manner but without any error messages. On the Windows 7 computers, if they navigate to their documents first and open them, AutoCAD will launch and open the drawing. If they try to then open a different drawing it gives the error message as before. I tried searching online for a solution and found a few posts over the years from here with the same error, but it doesn't seem that a solution had been posted. Most wrote it off as a network issue, but that isn't the case. Has anyone run into this problem recently with AutoCAD 2013 and Windows 7? Or anyone know of any general settings in AutoCAD that might pertain to this problem?Image may be NSFW.
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