Consider the following scenario:
- You install the Distributed File System (DFS) Namespace service on a computer that is running Windows Server 2008 R2.
- The reparse points that are configured within the default namespace setting represent the corresponding DFS namespace folders on the server.
- You restart the server. During the startup process, the system time of the server is changed. For example, when you restart a virtual machine, the system time of the virtual machine is synchronized with the host computer during the startup process.
Note After the system time is changed, an event that contains the system time before and after the change is logged in the System log.
Users cannot access their DFS shares because of DFS links disappearing from root servers within every 30 minutes.
Note DFS Links and their associated reparse point might disappear at any time during the runtime of the server.
When the system time changes before the reparse points are validated, then the changed time of the DFS namespace folders may be earlier than the service startup time. Therefore, the issue that is described in the "Symptoms" section occurs.
Note After you apply this hotfix, the scavenging algorithm for reparse points no longer relies on time stamps for validation.
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 Server 2008 R2 or Windows Server 2008 R2 Service Pack 1 (SP1). Additionally, you must have the DFS Namespace service installed.
For more information about how to obtain a Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base: