A Windows Server 2008-based DHCP server that is configured in a workgroup environment may consume too much memory

A Windows Server 2008-based DHCP server that is configured in a workgroup environment may consume too much memory

Article ID : 949530
Last Review : March 6, 2008
Revision : 1.0
Important This article contains information about how to modify the registry. Make sure that you back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:

322756 (/Feedback.aspx?kbNumber=322756/) How to back up and restore the registry in Windows XP and Windows Vista

SYMPTOMS

A Windows Server 2008-based Dynamic Host Configuration Protocol (DHCP) server that is configured in a workgroup environment may consume too much memory. Over time, the memory consumption may make the DHCP server become slow. Additionally, the memory consumption may make the DHCP server eventually shut down.

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CAUSE

This problem occurs because of a memory leak in the path that is used for unauthorized DHCP server detection on the DHCP server.

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RESOLUTION

Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

To resolve this problem, disable unauthorized DHCP server detection on the server. To do this, follow these steps:

1. Click Start, click Run, type cmd, and then click OK.
2. Type the following command, and then press ENTER:

reg add HKEY_LOCAL_MACHINE SYSTEM ControlSet001 Services DHCPServer Parameters /v DisableRogueDetection /t REG_DWORD /d 1

Note After you follow these steps, you must restart the DHCP server.

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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the Applies to section.

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APPLIES TO
• Windows Server 2008 Enterprise
• Windows Server 2008 Datacenter
• Windows Server 2008 Standard

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Keywords: 
kbtshoot kbpubtypekc kbprb KB949530

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