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An update is available to detect and prevent too much consumption of the global RID pool on a domain controller that is running Windows Server 2008 R2Article ID: 2618669 - View products that this article applies to. On This PageIntroductionActive Directory Domain Services (AD DS) assigns unique security identifiers (SIDs) to users, computers, groups, and trusts that are created in Active Directory. SIDs consist of a domain prefix concatenated with a monotonically increasing relative identifier (RID). Each Active Directory domain is assigned a global RID pool that consists of 1 billion RIDs. To enable each Active Directory domain controller to create new security principals, each domain controller is allocated current and standby RID pools from the RID master. When the global RID pool for the domain and for the local pools on individual domain controllers in a domain is exhausted, additional users, computers, and groups can no longer be created in the domain. To work around this issue, you can create and migrate objects and applications to a new domain. This article describes a condition in which a logic failure may result in too many RID pool requests. This leads to global RID pool exhaustion. SymptomsUnder certain rare circumstances, Windows Server 2008 R2 domain controllers unexpectedly consume a large amount of RID resources. This behavior exhausts the global RID pool. When this issue occurs, you experience one or more of the following issues:
CauseUnder certain rare circumstances, a domain controller may issue recurring requests for RIDs from the global RID pool every 30 seconds. If repetitive requests for RID pool updates are allowed to continue for a significant period of time, the global RID pool may experience too much RID consumption. In extreme cases, the global RID pool may be exhausted completely. ResolutionTo prevent too much RID consumption in the global RID pool, we recommend that you take the following actions:
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 Web site: http://support.microsoft.com/contactus/?ws=support 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.
(http://support.microsoft.com/contactus/?ws=support)
PrerequisitesTo apply this hotfix, you must be running one of the following operating systems:
976932
(http://support.microsoft.com/kb/976932/
)
Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2
Registry informationTo use the hotfix in this package, you do not have to make any changes to the registry.Restart requirementYou must restart the computer after you apply this hotfix.Hotfix replacement informationThis hotfix does not replace a previously released hotfix.File informationThe global version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.Windows Server 2008 R2 file information notesImportant Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.
For all supported x64-based versions of Windows Server 2008 R2Collapse this table
StatusMicrosoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. More information
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684
(http://support.microsoft.com/kb/824684/
)
Description of the standard terminology that is used to describe Microsoft software updates
Additional file informationAdditional file information for Windows Server 2008 R2Additional files for all supported x64-based versions of Windows Server 2008 R2Collapse this table
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