Originally published: May 26, 2010 at: http://technet.microsoft.com/en-us/library/dd430893(WS.10).aspx?lc=1033

Applies To: Windows Server 2008

For Windows Server 2008 R2 update list see: Hyper-V: Update List for Windows Server 2008 R2

The following table shows the list of software updates and hotfixes for Hyper-V in Windows Server 2008. Updates that are available on Windows Update are indicated, as well as the download location for those that are available at the Microsoft Download Center. These updates and hotfixes can help avoid some known issues and may save you a support call.

(This wiki page is part of a pilot program to remove topics such as this one from the TechNet and MSDN libraries and move them to the wiki. Why not leave this on the Library? Customers asked for an RSS feed so that they can get a notification when the list is updated and a new update is released. The RSS feed for this wiki article is http://social.technet.microsoft.com/wiki/contents/articles/hyper-v-update-list-for-windows-server-2008-r2/rss.aspx.) 

Note Some updates are required only under certain circumstances, as noted in the table. The updates for Windows Server 2008 Service Pack 2 (SP2) are applied automatically with the service pack, and do not need to be applied again. Also, you may want to see the list of updates for Hyper-V in Windows Server 2008 R2 (http://go.microsoft.com/fwlink/?LinkId=183395).

A hotfix is intended to correct only the problem that is described in the article. You should not apply the hotfix if you have net seen the symptoms.

In some cases, the version number of the Integration Services (also known as Integration Components) has changed. The IC version number for the RTM version of Windows Server 2008 is 6.0.6001.17101.

The IC version number for Windows Server 2008 RTM is 6.0.6001.17101.

The IC version number for Windows Server 2008 SP2 is 6.0.6002.18005

The IC version number for Windows Server 2008 R2 is 6.1.7600.16385.

The IC version number for Windows Server 2008 R2 SP1 (Beta) is 6.1.7601.16562.

Other IC version numbers related to KBs are listed with the KB in the table below for your reference.

Comprehensive list of Hyper-V updates

KB Article / Date
Name Required? File Name and IC Version  Applies to Availability Link
 KB950050 /  6/26/2008  ”Hyper-V Update for Windows Server 2008 x64 Edition” (This is the RTM version of Hyper-V.)  Yes. Windows6.0-KB950050-x64.msu / IC 6.0.6001.18016  Windows Server 2008 Windows Update, Download Center http://go.microsoft.com/fwlink/?LinkId=139066
KB950182 / 4/11/2008 “A computer that is running an x86-based version of Windows Server 2008 or an x86-based version of Windows Vista may use fewer processors than expected if the number of cores on a socket is not a power of 2” Yes, if you want to start an x86-based virtual machine running Windows Server 2008 on a computer that uses a 6-core processor. Windows6.0-KB950182-x86.msu Windows Server 2008 Hotfix http://go.microsoft.com/fwlink/?LinkId=139067
KB951308 / 9/11/2008

“Increased functionality and virtual machine control in the Windows Server 2008 Failover Cluster Management console for the Hyper-V role”

Yes, for Failover Clustering. Windows6.0-KB951308-v2-x64.msu Windows Server 2008 Download Center http://go.microsoft.com/fwlink/?LinkID=125397
KB951636 / 6/26/2008 “Hyper-V Language Pack Update for Windows Server 2008” Yes, if you are using the additional languages offered. Windows6.0-KB951636-x86.msu Windows Server 2008 Download Center http://go.microsoft.com/fwlink/?LinkId=139069
KB952627 / 6/26/2008 “Description of the Windows Vista Service Pack 1 Management Tools update for the release version of Hyper-V” (Install this to enable remote management of a computer running Windows Server 2008 with the Hyper-V role installed.) Yes, to enable remote management using the Hyper-V Manager Microsoft Management Console (MMC) snap-in. Varies Windows Server 2008 Download Center http://go.microsoft.com/fwlink/?LinkID=122189
KB953585 / 9/4/2008

“Error message when you try to start a Hyper-V virtual machine on a Windows Server 2008-based or Windows Vista-based computer that uses the NUMA architecture: "An error occurred while attempting to change the state of virtual machine VMNAME"”

Yes, if you are using a computer running Windows Server 2008 with Non-Uniform Memory Access (NUMA) architecture. Windows6.0-KB953585-x64.msu Windows Server 2008 Hotfix http://go.microsoft.com/fwlink/?LinkId=139068
KB953828 / 6/25/2008 “The NLB host does not converge as expected on Windows Server 2008 Hyper-V virtual machines” Yes, if you are using Network Load Balancing (NLB). Winows6.0-KB953828-x64.msu Windows Server 2008 Hotfix http://go.microsoft.com/fwlink/?LinkId=139070
KB956589 / 9/23/2008 “Hyper-V Update for Windows Server 2008 x64 Edition” (Install this to resolve potential issues when you manage Hyper-V with System Center Virtual Machine Manager (VMM) 2008.) Yes, if you are using System Center VMM 2008 to manage your environment. Windows6.0-KB956589-x64.msu Windows Server 2008 Download Center http://go.microsoft.com/fwlink/?LinkId=139611
KB956697 / 9/8/2008 “Update for Windows Server 2008 x64 Edition” (Install this to resolve an issue in which the Hyper-V Volume Shadow Copy Service (VSS) does not back up virtual machines properly.) Yes, if the Volume Shadow Copy Service (VSS) is utilized for backups. Windows6.0-KB956697-x64.msu Windows Server 2008 Windows Update, Download Center http://go.microsoft.com/fwlink/?LinkId=139612
KB956710 / 9/23/08

“Update for Windows Server 2008 x64 Edition” (Install this to enable the Hyper-V role to support up to 24 logical processors and 192 virtual machines.)

Yes, if the management operating system has more than 16 logical processors. Windows6.0-KB956710-v2-x64.msu / IC 6.0.6001.22258 Windows Server 2008 Download Center http://go.microsoft.com/fwlink/?LinkId=139613
KB956774 / 9/23/08 “Update for Windows Server 2008 x64 Edition” (Install this to resolve the scenario where a Background Intelligent Transfer Service (BITS) client cannot handle files that have paths that contain the volume GUID in Windows Server 2008.) Yes, if GUIDs are used instead of a drive letter or mount point. Windows6.0-KB956774-x64.msu Windows Server 2008 Hotfix http://go.microsoft.com/fwlink/?LinkId=139614
KB957967 / 10/8/2008 “Stop error message on a Windows Server 2008-based computer that has the Hyper-V role installed: "STOP 0x0000001A"” Yes. Windows6.0-KB957967-x64.msu Windows Server 2008 SP2 Hotfix http://go.microsoft.com/fwlink/?LinkId=139615
KB958065 / 11/3/2008 “You cannot configure a Hyper-V virtual machine by using Windows Server 2008 Failover Clustering when the virtual machine uses a storage device that is managed by a third-party clustered file system or a third-party replication solution” Yes, if you are using a non-Microsoft clustered file system or non-Microsoft replication solutions. Windows6.0-KB958065-v2-x64.msu Windows Server 2008 Hotfix http://go.microsoft.com/fwlink/?LinkId=139616
KB958184 / 11/5/2008 “Virtual machine backup operations fail in Windows Server 2008 when Hyper-V virtual machine files are saved on a volume that is mounted on a failover cluster by using a volume GUID” Yes, when backing up a volume that is mounted using a volume GUID. Windows6.0-KB958184-x64.msu Windows Server 2008 SP2 Hotfix http://go.microsoft.com/fwlink/?LinkID=133348
KB960578 / 12/17/2008 “The IRET and IRETD instructions do not support the Nested Task (NT) flag in protected mode in a Windows Server 2008 Hyper-V environment” Yes, if you have a program that uses the IRET (interrupt return) or IRETD (interrupt return double) instruction. Windows6.0-KB960578-x64.msu Windows Server 2008 SP2 Hotfix http://go.microsoft.com/fwlink/?LinkId=145170
KB959962 / 1/16/2009 “An update is available for Windows Server 2008-based computers to address issues with backing up and restoring Hyper-V virtual machines” Yes, when backing up virtual machines. Windows6.0-KB959962-v3-x64.msu Windows Server 2008 SP2 Hotfix http://go.microsoft.com/fwlink/?LinkId=145171
KB963709 / 3/03/2009 “The AltGr key does not work on a Linux virtual machine on a Windows Server 2008-based server that has the Hyper-V role enabled” Yes, if you are using a German keyboard. Windows6.0-KB963709-x64.msu Windows Server 2008 SP2 Hotfix http://go.microsoft.com/fwlink/?LinkId=151938
KB967902 / 3/24/2009 “You cannot connect to a virtual machine when the Windows Server 2008 Hyper-V VMMS certificate has expired” Yes. Windows6.0-KB967902-x64.msu Windows Server 2008 SP2 Windows Update, Download Center, Hotfix http://go.microsoft.com/fwlink/?LinkId=151937
KB970203 / 6/23/2009 “Hyper-V Management Tools update for Windows Vista Service Pack 2” (Install this for fixes for the Hyper-V Management Tools on computers that are running Windows Vista Service Pack 2). Yes, if you are using the Hyper-V Manager Microsoft Management Console (MMC) snap-in. Windows6.0-KB970203-x86.msu Windows6.0-KB970203-x64.msu Windows Vista SP2 Download Center http://go.microsoft.com/fwlink/?LinkId=178382
KB972045 / 7/14/2009 “Slow system response together with many other performance issues occur on a virtualization server that is running Windows Server 2008 and that has the Hyper-V role installed” No. Windows6.0-KB972045-x64.msu Windows Server 2008, Windows Server 2008 SP2 Hotfix http://go.microsoft.com/fwlink/?LinkId=178381
KB971677 / 8/5/2009 “A Hyper-V differencing disk that you create in Windows Server 2008 R2 cannot be used in Windows Server 2008” Yes, if you have differencing disks that were created in Windows Server 2008 R2 and want to use them in Windows Server 2008 Windows6.0-KB971677-x64.msu Windows Server 2008, Windows Server 2008 SP2 Hotfix http://go.microsoft.com/fwlink/?LinkId=178380
KB975925 / 12/1/2009 “A hotfix is available that addresses the issues that occur when you perform a host-level backup of a Hyper-V VM on a computer that is running Windows Server 2008” Yes, if you are running Hyper-V on the affected hardware. Windows6.0-KB975925-x64.msu Windows Server 2008 SP2 Hotfix http://go.microsoft.com/fwlink/?LinkId=179090
KB977894 / 2/9/2010 “MS10-010: Vulnerability in Windows Server 2008 Hyper-V could allow denial of service” Yes. Windows6.0-KB977894-x64.msu Windows6.1-KB977894-x64.msu Windows Server 2008, Windows Server 2008 SP2, Windows Server 2008 R2 Security bulletin http://go.microsoft.com/fwlink/?LinkId=193214
KB981791 / 4/26/2010 “"STOP: 0x0000001a" error message on a computer that has an Intel Westmere processor together with the Hyper-V role installed on Windows Server 2008 or on Windows Server 2008 R2” Yes, if you are running Hyper-V on Intel Westmere processors. n.a. Windows Server 2008 SP2 Hotfix http://go.microsoft.com/fwlink/?LinkID=193221

KB2264080 /

8/24/2010

"An update rollup package for the Hyper-V role in Windows Server 2008 R2: August 24, 2010" Windows Server 2008 R2 Hotfix http://support.microsoft.com/kb/2264080

Resources

  • VSC and VPC Updates
  • DPM/VSS Updates here:

    • 960038 You receive a "0x0000007E" Stop error on Windows Server 2008-based computers that host Hyper-V virtual machines when you use the Hyper-V writer to back up virtual machines. http://support.microsoft.com/kb/960038
    • 959962 KB959962 is scheduled to release in January 2009, it enables online protection of Hyper-V guest machines. Until the update is available, virtual machines can be protected by configuring them for offline backup within each machines’ Integration Components service settings. Open the Settings window for the virtual machine and select Integration Services in the left pane. Clear the check box for Backup (volume snapshot) service and click OK. If you have set the DWORD AllowOffline registry key under HKEY_LOCAL_MACHINE\Software\Microsoft\Microsoft Data Protection Manager\Agent make sure the value is not zero (0).. http://technet.microsoft.com/en-us/library/dd347840.aspx

 SCVMM updates here: http://blogs.technet.com/jonjor/archive/2008/12/29/updates-updates-scvmm-hyper-v-cluster.aspx

Community Content :

Post Windows Server 2008 R2 RTM Hyper-V patches
cedward ... Thomas Lee  

 Stop error message on an Intel Xeon 5500 series processor-based computer that is running Windows Server 2008 R2 and that has the Hyper-V role installed: "0x00000101 - CLOCK_WATCHDOG_TIMEOUT"
http://support.microsoft.com/kb/975530
The network connection of a running Hyper-V virtual machine is lost under heavy outgoing network traffic on a Windows Server 2008 R2-based computer.
http://support.microsoft.com/kb/974909

 Windows Updates, Virtualization KBs and Tools
tonysoper ... Thomas Lee   Please Wait

 You can also find Windows Server and Client updates, virtualization KBs and useful tools here as well:

Tools

SP2 includes previous patches
tonysoper ... Thomas Lee 

The page that lists all the updates above that are included in SP2 is at: http://technet.microsoft.com/en-us/library/dd335033(WS.10).aspx, or you can DL the excel spreadsheet at: http://go.microsoft.com/fwlink/?LinkId=143706

 KB980081: A computer that is running an x64-based version of Windows Server 2008 crashes
Pronichkin 

New Hotfix for Windows Server 2008 Service Pack 2: KB980081: A computer that is running an x64-based version of Windows Server 2008 crashes (http://support.microsoft.com/kb/980081)