DHCPv4 IP address cannot be obtained after you restart a Hyper-V virtual machine that is running Windows Vista, Windows 7, Windows Server 2008 or Windows Server 2008 R2

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Article ID: 2710870 - View products that this article applies to.
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Symptoms

Assume that you are using a Hyper-V virtual machine that is running one of the following operating systems:
  • Windows Vista
  • Windows Server 2008
  • Windows 7
  • Windows Server 2008 R2
The time zone on the virtual machine is set to a time zone other than Pacific Standard Time (PST). In this situation, you may experience a DHCP IP address acquisition issue in the following scenarios:
  • The guest operating system and the host operating system are set to use the same time zone other than PST, such as Eastern Standard Time (EST). The Hyper-V time synchronization service is enabled. In this situation, the DHCPv4 IP address cannot be obtained after you restart the guest operating system for the first time.

    Note This issue only occurs after you restart the virtual machine for the first time.
  • The guest operating system and the host operating system are set to use different time zones. For example, the guest operating system uses the PST time zone, and the host operating system uses the EST time zone. The Hyper-V time synchronization service is enabled. In this scenario, the DHCPv4 IP address cannot be obtained after you restart the guest operating system.

    Note This issue occurs every time that you restart the virtual machine.

Resolution

Hotfix information

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 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:
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

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 7
  • Windows 7 Service Pack 1 (SP1)
  • Windows Server 2008 R2
  • Windows Server 2008 R2 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 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 How to obtain the latest service pack for Windows Server 2008
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:
976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Registry information

To apply this hotfix, you do not have to make any changes to the registry.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

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The 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 Vista and Windows Server 2008 file information notes
Important Windows Vista hotfixes and Windows Server 2008 hotfixes are included in the same packages. However, only "Windows Vista" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows Vista" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.
  • The files that apply to a specific product, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.
    Collapse this tableExpand this table
    VersionProductSR_LevelService branch
    6.0.600 2 . 22xxxWindows Vista and Windows Server 2008SP2LDR
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008 and for Windows Vista" section. MUM files and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.
For all supported x86-based versions of Windows Server 2008 and of Windows Vista
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File nameFile versionFile sizeDateTimePlatform
Dhcpcmonitor.dll6.0.6002.2296110,24030-Oct-201202:45x86
Dhcpcsvc.dll6.0.6002.22961205,82430-Oct-201202:45x86
Dhcpcsvc6.dll6.0.6002.22961132,09630-Oct-201202:45x86
For all supported x64-based versions of Windows Server 2008 and of Windows Vista
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File nameFile versionFile sizeDateTimePlatform
Dhcpcmonitor.dll6.0.6002.2296112,28830-Oct-201203:42x64
Dhcpcsvc.dll6.0.6002.22961268,80030-Oct-201203:42x64
Dhcpcsvc6.dll6.0.6002.22961163,32830-Oct-201203:42x64
Dhcpcmonitor.dll6.0.6002.2296110,24030-Oct-201202:45x86
Dhcpcsvc.dll6.0.6002.22961205,82430-Oct-201202:45x86
Dhcpcsvc6.dll6.0.6002.22961132,09630-Oct-201202:45x86
For all supported IA-64-based versions of Windows Server 2008
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File nameFile versionFile sizeDateTimePlatform
Dhcpcmonitor.dll6.0.6002.2296124,06430-Oct-201202:11IA-64
Dhcpcsvc.dll6.0.6002.22961547,84030-Oct-201202:11IA-64
Dhcpcsvc6.dll6.0.6002.22961358,91230-Oct-201202:11IA-64
Dhcpcmonitor.dll6.0.6002.2296110,24030-Oct-201202:45x86
Dhcpcsvc.dll6.0.6002.22961205,82430-Oct-201202:45x86
Dhcpcsvc6.dll6.0.6002.22961132,09630-Oct-201202:45x86
Windows 7 and Windows Server 2008 R2 file information notes
Important 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.
  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:
    Collapse this tableExpand this table
    VersionProductMilestoneService branch
    6.1.760 0.21xxxWindows 7 and Windows Server 2008 R2RTMLDR
    6.1.760 1.21xxxWindows 7 and Windows Server 2008 R2SP1LDR
  • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows 7 and for Windows Server 2008 R2" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.
For all supported x86-based versions of Windows 7
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File nameFile versionFile sizeDateTime
Dhcpclientdll.ptxmlNot applicable5,59713-Jul-200920:24
Dhcpcore.dll6.1.7600.21209256,00008-May-201204:34
Dhcpcore6.dll6.1.7600.21209193,02408-May-201204:34
Dhcpclientdll.ptxmlNot applicable5,59713-Jul-200920:24
Dhcpcore.dll6.1.7601.21989256,51208-May-201204:20
Dhcpcore6.dll6.1.7601.21989193,02408-May-201204:20
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTime
Dhcpclientdll.ptxmlNot applicable5,59713-Jul-200920:19
Dhcpcore.dll6.1.7600.21209315,39208-May-201205:26
Dhcpcore6.dll6.1.7600.21209224,25608-May-201205:26
Dhcpclientdll.ptxmlNot applicable5,59713-Jul-200920:19
Dhcpcore.dll6.1.7601.21989318,97608-May-201205:16
Dhcpcore6.dll6.1.7601.21989224,25608-May-201205:16
For all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTime
Dhcpclientdll.ptxmlNot applicable5,59713-Jul-200920:19
Dhcpcore.dll6.1.7600.21209617,98408-May-201204:25
Dhcpcore6.dll6.1.7600.21209463,36008-May-201204:25
Dhcpclientdll.ptxmlNot applicable5,59713-Jul-200920:19
Dhcpcore.dll6.1.7601.21989620,54408-May-201204:17
Dhcpcore6.dll6.1.7601.21989463,36008-May-201204:17
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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.

More information

For more information about virtual machines and guest operating systems, go to the following Microsoft website:
General information about virtual machines and guest operating systems
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional file information

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Additional file information for Windows Vista and for Windows Server 2008

Additional files for all supported x86-based versions of Windows Vista and of Windows Server 2008
Collapse this tableExpand this table
File nameUpdate.mum
File versionNot Applicable
File size3,078
Date (UTC)30-Oct-2012
Time (UTC)10:05
PlatformNot Applicable
File nameX86_1de12c4272d35d1a02b3ffa5d9edac90_31bf3856ad364e35_6.0.6002.22961_none_9584fe2a36f61e26.manifest
File versionNot Applicable
File size703
Date (UTC)30-Oct-2012
Time (UTC)10:05
PlatformNot Applicable
File nameX86_microsoft-windows-dhcp-client-dll_31bf3856ad364e35_6.0.6002.22961_none_d98a6df745036612.manifest
File versionNot Applicable
File size41,264
Date (UTC)30-Oct-2012
Time (UTC)03:03
PlatformNot Applicable
Additional files for all supported x64-based versions of Windows Vista and of Windows Server 2008
Collapse this tableExpand this table
File nameAmd64_538095386ed2a9732ab91dcdfd897bdd_31bf3856ad364e35_6.0.6002.22961_none_c2262ad786d5a175.manifest
File versionNot Applicable
File size1,054
Date (UTC)30-Oct-2012
Time (UTC)10:05
PlatformNot Applicable
File nameAmd64_microsoft-windows-dhcp-client-dll_31bf3856ad364e35_6.0.6002.22961_none_35a9097afd60d748.manifest
File versionNot Applicable
File size41,312
Date (UTC)30-Oct-2012
Time (UTC)04:04
PlatformNot Applicable
File nameUpdate.mum
File versionNot Applicable
File size3,102
Date (UTC)30-Oct-2012
Time (UTC)10:05
PlatformNot Applicable
File nameX86_microsoft-windows-dhcp-client-dll_31bf3856ad364e35_6.0.6002.22961_none_d98a6df745036612.manifest
File versionNot Applicable
File size41,264
Date (UTC)30-Oct-2012
Time (UTC)03:03
PlatformNot Applicable
Additional files for all supported IA-64-based versions of Windows Server 2008
Collapse this tableExpand this table
File nameIa64_8089ab3a5ff0214061cc71eecac241ab_31bf3856ad364e35_6.0.6002.22961_none_8322133747ccabfd.manifest
File versionNot Applicable
File size1,052
Date (UTC)30-Oct-2012
Time (UTC)10:05
PlatformNot Applicable
File nameIa64_microsoft-windows-dhcp-client-dll_31bf3856ad364e35_6.0.6002.22961_none_d98c11ed45016f0e.manifest
File versionNot Applicable
File size41,287
Date (UTC)30-Oct-2012
Time (UTC)02:24
PlatformNot Applicable
File nameUpdate.mum
File versionNot Applicable
File size2,255
Date (UTC)30-Oct-2012
Time (UTC)10:05
PlatformNot Applicable
File nameX86_microsoft-windows-dhcp-client-dll_31bf3856ad364e35_6.0.6002.22961_none_d98a6df745036612.manifest
File versionNot Applicable
File size41,264
Date (UTC)30-Oct-2012
Time (UTC)03:03
PlatformNot Applicable

Additional file information for Windows 7 and for Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7
Collapse this tableExpand this table
File nameX86_ac123c60ab16788effc00986b60c7193_31bf3856ad364e35_6.1.7600.21209_none_7aba5f15b9a6b19b.manifest
File versionNot applicable
File size703
Date (UTC)08-May-2012
Time (UTC)10:00
File nameX86_ca0dbad0123d0a47872b71621797af84_31bf3856ad364e35_6.1.7601.21989_none_a23eea682e343a16.manifest
File versionNot applicable
File size703
Date (UTC)08-May-2012
Time (UTC)10:00
File nameX86_microsoft-windows-dhcp-client-dll_31bf3856ad364e35_6.1.7600.21209_none_d8148282a8bca9dc.manifest
File versionNot applicable
File size95,014
Date (UTC)08-May-2012
Time (UTC)10:42
File nameX86_microsoft-windows-dhcp-client-dll_31bf3856ad364e35_6.1.7601.21989_none_d9a48806a623c20e.manifest
File versionNot applicable
File size95,014
Date (UTC)08-May-2012
Time (UTC)10:42
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameAmd64_38f1a67839653877fcb075f1dde3ef0b_31bf3856ad364e35_6.1.7601.21989_none_e5911a26a8cd9fd6.manifest
File versionNot applicable
File size1,054
Date (UTC)08-May-2012
Time (UTC)10:00
File nameAmd64_6d0c5e9ab2fe6a7d64576f9bb88649d7_31bf3856ad364e35_6.1.7600.21209_none_776c24fc11d81338.manifest
File versionNot applicable
File size1,054
Date (UTC)08-May-2012
Time (UTC)10:00
File nameAmd64_e366fa022172bda9daf5f3e7ef6773c5_31bf3856ad364e35_6.1.7600.21209_none_c6ae3f5c87f03409.manifest
File versionNot applicable
File size707
Date (UTC)08-May-2012
Time (UTC)10:00
File nameAmd64_ffda004f67e15a7d6f09b2075832672e_31bf3856ad364e35_6.1.7601.21989_none_237e87751b371d0e.manifest
File versionNot applicable
File size707
Date (UTC)08-May-2012
Time (UTC)10:00
File nameAmd64_microsoft-windows-dhcp-client-dll_31bf3856ad364e35_6.1.7600.21209_none_34331e06611a1b12.manifest
File versionNot applicable
File size95,032
Date (UTC)08-May-2012
Time (UTC)10:49
File nameAmd64_microsoft-windows-dhcp-client-dll_31bf3856ad364e35_6.1.7601.21989_none_35c3238a5e813344.manifest
File versionNot applicable
File size95,032
Date (UTC)08-May-2012
Time (UTC)10:49
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameIa64_102887a3f1530f00e8b9ed10436c9961_31bf3856ad364e35_6.1.7601.21989_none_dd802ddc81b5a0af.manifest
File versionNot applicable
File size1,052
Date (UTC)08-May-2012
Time (UTC)10:00
File nameIa64_c6f3a9ffeeea9550d9e6d19c759d8b6f_31bf3856ad364e35_6.1.7600.21209_none_09741be2703e0e1e.manifest
File versionNot applicable
File size1,052
Date (UTC)08-May-2012
Time (UTC)10:00
File nameIa64_microsoft-windows-dhcp-client-dll_31bf3856ad364e35_6.1.7600.21209_none_d8162678a8bab2d8.manifest
File versionNot applicable
File size95,023
Date (UTC)08-May-2012
Time (UTC)10:00
File nameIa64_microsoft-windows-dhcp-client-dll_31bf3856ad364e35_6.1.7601.21989_none_d9a62bfca621cb0a.manifest
File versionNot applicable
File size95,023
Date (UTC)08-May-2012
Time (UTC)10:00
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Properties

Article ID: 2710870 - Last Review: January 10, 2013 - Revision: 2.0
Applies to
  • Windows Server 2008 R2 Enterprise
  • Windows Server 2008 R2 Datacenter
  • Windows Server 2008 R2 for Itanium-Based Systems
  • Windows Server 2008 R2 Foundation
  • Windows Server 2008 R2 Standard
  • Windows Web Server 2008 R2
  • Windows 7 Enterprise
  • Windows 7 Home Basic
  • Windows 7 Home Premium
  • Windows 7 Professional
  • Windows 7 Starter
  • Windows 7 Ultimate
  • Windows Vista Business
  • Windows Vista Business 64-bit Edition
  • Windows Vista Enterprise
  • Windows Vista Enterprise 64-bit Edition
  • Windows Vista Home Basic
  • Windows Vista Home Basic 64-bit Edition
  • Windows Vista Home Premium
  • Windows Vista Home Premium 64-bit Edition
  • Windows Vista Ultimate
  • Windows Vista Ultimate 64-bit Edition
  • Windows Server 2008 Datacenter
  • Windows Server 2008 Datacenter without Hyper-V
  • Windows Server 2008 Enterprise
  • Windows Server 2008 Enterprise without Hyper-V
  • Windows Server 2008 for Itanium-Based Systems
  • Windows Server 2008 Foundation
  • Windows Server 2008 Standard
  • Windows Server 2008 Standard without Hyper-V
Keywords: 
kbautohotfix kbqfe kbhotfixserver kbfix kbsurveynew kbexpertiseadvanced KB2710870

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