Slow network share and document access when using Windows 10 version 1803

Attiecas uz: Windows 10 Enterprise version 1803Windows 10 Pro for Workstations, version 1803Windows 10 Pro for Education, version 1803

Symptoms


You upgrade a Windows 10 computer to Windows 10, version 1803. After the upgrade finishes, you access a network share that contains thousands of files and folders, and you open a document that is located on that share. During both of these operations, you experience significant delays.

If you uninstall the Windows 10 version 1803 upgrade, you can access network shares without delays.

Cause


This is a known issue in Windows 10, version 1803. For a list of specific editions that are affected by this issue, see the "Applies to" list. The issue affects the ability of Windows 10 to cache large directories.

Resolution


To resolve this issue, install Windows 10, version 1809 or a later version.

Workaround


Important
Follow the steps in this section carefully. Serious problems might occur if you modify the registry incorrectly. Before you modify it, back up the registry for restoration in case problems occur.

If you cannot upgrade the computer to a later version of Windows 10, you can work around the issue by configuring the DirectoryCacheLifetime registry key as shown in the following subkey:

HKLM\System\CurrentControlSet\Services\LanmanWorkstation\Parameters\DirectoryCacheLifetime
 
  • Type: REG_DWORD
  • Value: 0