![]() Or, as a workaround, disable IPv6 in the environment. If IPv6 is enabled in the environment, configure IPv6 subnets in Active Directory Sites and Services.Set the Ordering Method for Targets in Referrals.Make sure that the local DFS server is working.If subnets aren't mapped correctly, DFS will give an incorrect priority to remote DFS servers while it presents referrals. If it is connected, double-check the site and subnet mapping in Active Directory Sites and Services. (Ideally, it should be connected to the local site DFS server). Check whether the client is connected to a remote/WAN DFS server.If the issue isn't resolved, follow these steps to troubleshoot the issue: Install the hotfixes for the file server that hosts the shared folder.įor Windows Server 2008 or Windows 7, install all the hotfixes that are described in KB 2473205.įor Windows Server 2012 or Windows 8, install all the hotfixes that are described in KB 2899011. Make sure that client for Microsoft networking is selected in the network connection properties. Make sure that the workstation service is running. (If it is disabled, enable it, and then check whether that helps) ![]() and adjust the settings of Jumbo Frames and Large send offload accordingly. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\NetworkProvider\HwOrder HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\NetworkProvider\OrderĬheck to make sure that each Provider Order value has only three values: " RDPNP," " LanmanWorkstation," and " webclient."Ĭompare the settings of Jumbo Frames and Large send offload with the settings on working computers. Each key contains a Provider Order value. Remove additional values from the following registry keys. (Any other provider can be considered as a third party.) To resolve this issue, follow these steps on the client computer that has the problem:ĭelete the third-part network provider from client computer. Slow performance occurs when you copy a single file, a folder, or multiple files The more files that are in the folder, the slower the file-copying process. If you compare the copying time for a folder that contains multiple files with the copying time for a file of the same size, copying the folder will always require more time. Slow performance occurs only when you copy a folder or multiple files The share folder is not a DFS shared folderĬheck when the slow file copying problem occurs. If the issue is still not resolved, see server side troubleshooting. By design, if the client can't connect the first referral, it will switch to the second and so on. Connect these paths one by one, and make sure that all destination paths can be reached directly from the client.Remove UNC paths that aren't active or servers that aren't reachable or are removed.On the DFS tab, locate all active referrals. Right-click the shared folder, and then select Properties.If the issue does not occur when you use the UNC path, follow these steps to verify the DFS referrals. If it is still slow when you use the UNC path, see slow performance when you copy a single file, a folder, or multiple files. On the DFS tab, you see the UNC path in Referral list. Right-click the shared folder, and then select Properties. How to determine the UNC path of the DFS shared folder: This step can help you determine whether the problem is caused by the DFS path. Then, you can check whether the issue still occurs. Try to use the UNC path instead of the DFS path to open the shared folder. Let's determine whether the problem is caused by the DFS path. For the Distributed File System (DFS) shared folder, the DFS tab is displayed. To do so, open the properties of the shared folder. Let's verify the kind of the shared folder. If issue doesn't occur, see client-side troubleshooting.If the file copy speed is still slow, see server-side troubleshooting.If the speed is normal, use another client computer to copy the files from or to the shared folder. If the issue still occurs, contact the driver manufacturer for further troubleshooting. If the file-copying speed is unusually low (much slower than average speed), try to update the driver for your storage. On the file server that hosts the shared folder, copy the file to its local hard disk. Slow file copying can be caused by storage issues, client issues, and server issues. This article helps administrators to diagnose and resolve the issue of slow file copy in your organization.Īpplies to: Windows 10 - all editions, Windows Server 2012 R2 Original KB number: 10118 Determine the cause of the issue
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