Windows Server 2008: DNS Host record of a computer is deleted after you change the DNS server assignment

SUPPORT SOLUTION:
Consider the following scenario:You configure two DNS servers in a domain.You create Active Directory-integrated DNS zones, and then you enable dynamic update on both DNS servers.You join a computer that is running one of the following operating systems to the domain:Windows VistaWindows Server 2008Windows 7Windows Server 2008 R2 You configure the computer to use one of the DNS servers in the domain. You change the DNS server assignment of the computer to the other DNS server in the domain.You perform one of the following operations on the client computer:You restart the computer.You restart the DNS client service. You run the ipconfig /registerdns command.In this scenario, the DNS Host record of the computer is deleted from the DNS server. Therefore, name resolution issues occur. For example, you change the DNS server assignment of an Exchange server. Subsequently, the Host record of the Exchange server is deleted. In this scenario, users cannot connect to the Exchange server. This issue occurs because of an issue in the DNS Client service. When the DNS server configuration information is changed on a client, the DNS Client service deletes the DNS host record of the client from the old DNS server and then adds it to the new DNS server. Because the DNS record is present on the new server that is a part of the same domain, the record is not updated. However, the old DNS server replicates the deletion operation to the new DNS server and to other DNS servers. Therefore, the new DNS server deletes the record, and the record is deleted across the domain. Hotfix information
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A 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 this specific problem. 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, submit a request to 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 (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.Prerequisites
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To apply this hotfix, you must be running one of the following operating systems:Windows Vista Service Pack 2 (SP2)Windows Server 2008 Service Pack 2 (SP2)Windows 7Windows 7 Service Pack 1 (SP1)Windows Server 2008 R2Windows Server 2008 R2 Service Pack 1 (SP1) For more information about how to obtain a Windows Vista service pack, click the following article number to view the article in the Microsoft Knowledge Base: 935791  (http://support.microsoft.com/kb/935791/ ) How to obtain the latest Windows Vista service pack For more information about how to obtain a Windows Server 2008 service pack, click the following article number to view the article in the Microsoft Knowledge Base: 968849  (http://support.microsoft.com/kb/968849/ ) How to obtain the latest service pack for Windows Server 2008 For more information about how to obtain a Windows 7 or a Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base: 976932  (http://support.microsoft.com/kb/976932/ ) Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2 Registry information
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To use the hotfix in this package, you do not have to make any changes to the registry.Restart requirement
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You must restart the computer after you apply this hotfix.Hotfix replacement information
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This hotfix does not replace a previously released hotfix.

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