We have some users connecting to our network via a vpn connection. This for all intents and purposes works fine and there are no glitches, until we upgraded to Windows 7.Essentially copying files between the PC's and the network (these PC's are on a different subnet and mask to our main network), is impossibly slow and often kills the network connections temporarily.I noticed this same issue previously with a Windows Server 2008 machine when trying to copy files between two domains on different subnets.It is just bizarre and I cannot find a working solution to something that is so basic to the operation of a Windows network. What is going on? Was fine using XP.Any workarounds, advice would be most useful, as this just happens to affect our networks "notorious" user!.CheersIan

Hello,Try to update the network card driver:1. Click Start Menu, type “devmgmt.msc” (without quotation marks) in the “Start Search” box and press Enter.2. Locate the netword card and choose "Update driver software...".3. Click Search automatically for updated driver software to install the driver from windows update.If the problem still happens, changing the Speed & Duplex settings and see if the issue persists:1. Click Start Menu, type “devmgmt.msc” (without quotation marks) in the “Start Search” box and press Enter. 2. Double click to "expand Network adapters" 3. Right click your network card and choose properties. 4. In Advanced tab, select “Speed & Duplex”, change the value to 100MB half. If the issue persists, please the “100mb full”. You can also try to boot the computer to "Safe mode with networking" for test. Thomas77

Alas, all suggestions make no difference.

Hello,Windows 7 has some features which may slow the Network performance and you can consider turn off them as a test if mklink still not work:1. Auto-tuningClick Start,Input cmd, Right-click Command Prompt, and then click Run as Administrator.If you are prompted for an administrator password or confirmation, type the password or provide confirmation.At the command prompt, type the following command, and then press ENTER:netsh interface tcp set global autotuninglevel=disabledThis command disables the Receive Window Auto-Tuning feature. 2. Remote Differential Compression (RDC) -------------------Start>>Control Panel>>Programs and FeaturesClick on ‘Turn windows features on or off’ on the left side of the screenUnchecked ‘Remote Differential Compression’Thomas77

I've done all those things. In addition I've turned off the Task Offloads as per this article :-http://www.windowsreference.com/windows-vista/slow-network-copy-and-connection-drops-in-windows-7/Not sure if doing the above overrides the settings in the NIC properties but I've also disabled the IPv4 Checksum Offload, the Large Send Offload v2 (IPv4) & the IPv6 one too - even though I've disabled IPv6 completely using the DisabledComponents registry setting.I have always been able to copy files & folders no problem to the PC from the network.I've configured a workaround for now, which is by connecting to our Remote Desktop Server from the problem PC's, we can map a drive back to the PC, and then copy from the PC mapped drive to the network!!!!