I have a customer with a LAN consisting of a Windows Small Business Server and 5 workstations:
Windows 7 Pro (1)
Windows Vista Pro (2)
Windows XP Pro (2)
There is a shared folder at the server, which is mapped as F: at the clients.
Their main application is an Access 2002 database with a Front End/Back End configuration.
I upgraded SBS from 2003 (32 bit) to a new server with SBS 2008 (64 bit).
After that , the clients with Windows XP have no problem. The other ones, get "disk or network error" randomly, while they are working with the Access application. This never happened with SBS 2003. They also get a similar message with a Quickbooks Client/Server configuration.
All Clients are connected to a single 16 port network switch which I just upgraded from 100 Kb to 1 Gb. It shows the problem with both switches.
I tried the Microsoft article http://support.microsoft.com/kb/297684
but it didn't make a difference.
I suggested the server upgrade and I've spent 2 months looking for a fix and at this point I'm out of ideas. It's also embarrasing. This is a very good customer of mine.
Could you please help?
Thank you very much!