- When you view the network traces of the slow transactions, you notice that the DFS API request NetrDfsGetInfo or dfs_GetInfo is taking some time.
Note The combined load of all domain controllers in a big domain against the Primary Domain Controller (PDC) might become so big that the connection to the PDC fails and that the DFS API does not respond with a valid path. When this happens, the roaming profile cannot be loaded after the delay. Please review the "More Information" section in this article.
- When you view the processing of the request at the DFS server, which is usually the local domain controller (local DC), you see that it has communication with the PDC. There are two basic scenarios where a delay happens:
- When the DFS volume has many links and the PDC is attached over a low wide area network (WAN) link, it can take a long time to retrieve the data that the local DC requests by using the LDAP protocol.
- When the local DC cannot reach the PDC, it spends significant time retrying a connection with it.
Hotfix informationA supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.
If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.
Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft website: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.
PrerequisitesTo apply this hotfix, you must be running Windows 7 SP1 or Windows Server 2008 R2 SP1.
For more information about how to obtain a Windows 7 or Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
Registry informationTo apply this hotfix, you do not have to make any changes to the registry.
Restart requirementYou do not have to restart the computer after you apply this hotfix.
Hotfix replacement informationThis hotfix does not replace a previously released hotfix.
dfsutil /root:\\domain\dfsroot /RootScalability /Disable
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
Article ID: 2915094 - Last Review: Mar 11, 2014 - Revision: 1