I am building a thick, Windows 7 Enterprise SP1 64-bit, image. The machine I'm building the image on is NOT in the domain, so to get access to 3 network drives during the build I am running a vbs to map them, like this: sDriveLetter="H:" sRemotePath="\\10.12.1.6\Users\Administrator" bPersistentMap="False" sNetworkUser="DomainName\Administrator" sPswd="password" oNetwork=WScript.CreateObject("WScript.Network") oNetwork.MapNetworkDrivesDriveLetter,sRemotePath,bPersistentMap,sNetworkUser,sPswd The three drives map properly everytime, but I've noticed that sometimes when I try to copy files to these network drives, I get the following message: When I copy small txt or jpg files it works , but larger files, which are usually exes do not. UAC is disabled, that is the slider is at the bottom at "Never notify" Can anyone explain what's going on?

What is the target? There are number of cases like yours. More details is needed to narrow the problem: http://support.microsoft.com/kb/2249715 Interesting solution is here http://forum.wdlxtv.com/viewtopic.php?f=58&t=2859 Rgds Milos

Hi, First, please check whether you can use the command, such as Xcopy, Robocopy to copy the large file? Whether the NIC driver is updated and the firmware on your router in the latest? Also try to remap the network drive to check the result. Windows 7 - Map Network Drive http://www.sevenforums.com/tutorials/49517-map-network-drive.html If the issue still persists, I suggest to perform these tests on Windows 7 network 1. Copy the file in the Safe Mode with Networking to see the result 2. Disable Autotuning: Open CMD as administrator, and input the command: Netsh interface tcp set global autotuning=disabled 3. Disable remote differential compression: Open Programs and Features, remove the feature Remote Different Compression 4. Modify link speed and duplex value in network adapter properties: Right click network adapter and choose properties, go to advanced tab, choose link speed& Duplex, select the value to Auto Negotiation 5. Clear DNS Cache: Ipconfig /flushdns 6. Temporally disable IPv6 In addition, here is one related article can be referred to. You cannot copy a large file and paste the file to a multi-core computer that is running Windows 7 when the computer contains a network adapter that does not support the RSS feature Hope this helps. Vincent Wang TechNet Community Support

I haven't actually solved this issue but the issue doesn't exist once the machine is added to active directory, so I've chalked it up to something I just have to deal with until the machine is added to AD.