List of Hyper-V related hotfixes post RTM for Windows 8.1 and Windows Server 2012 R2

Applies to:   

Windows Server 2012 R2
Windows 8.1

Windows Server 2012 R2 RTM
Windows 8.1 RTM

Note: You should check http://support.microsoft.com for the latest version of the different files.
Note 2: These are not available in Windows Update.
Note 3: You can download them without entering your e-mail address and captcha if you are a Microsoft Premier customer and have a http://Premier.Microsoft.com account.
Note 4: Carefully review the list and decide which might be applicable to your unique environment.
Note 5: Test in your test and your quality assurance environment.

Originally published Feb. 2014. Updated Feb. 2014 and Sep. 2017.

The recommended fixes by the Hyper-V Product Group (PG) and Customer Service and Support (CSS)

3135020 Recommended hotfixes, updates, and known solutions for Windows Server 2012 R2 Hyper-V environments
http://support.microsoft.com/?id=3135020

A complete list up to Sep. 2017:

3146604 WMI service crashes randomly in Windows Server 2012 R2 or Windows Server 2012
http://support.microsoft.com/?id=3146604

Update(s):

Wmidcprv.dll 6.3.9600.18264

Wmiprvsd.dll 6.3.9600.18264

Wmiprvse.exe 6.3.9600.18264

Wmipicmp.dll 6.3.9600.18264

Wmipicmp.mof

Wmiprov.dll 6.3.9600.18264

3145432 Cluster nodes or VMs go offline when they are using VMQ capable NICs on a Windows Server 2012 R2 host
http://support.microsoft.com/?id=3145432

Update(s):

Msft_netlbfoteam.cdxml

Msft_netlbfoteam.format.ps1xml

Msft_netlbfoteammember.cdxml

Msft_netlbfoteammember.format.ps1xml

Msft_netlbfoteamnic.cdxml

Msft_netlbfoteamnic.format.ps1xml

Msft_netswitchteam.cdxml

Msft_netswitchteam.format.ps1xml

Msft_netswitchteammember.cdxml

Msft_netswitchteammember.format.ps1xml

Msnetimplatform.mof

Ndisimplatcim.dll 6.3.9600.18258

Ndisimplatform.dll 6.3.9600.17415

Ndisimplatform.sys 6.3.9600.18258

Netlbfo.psd1

Netlbfo.types.ps1xml

Netswitchteam.mof

Netswitchteam.psd1

Netswitchteamcim.dll 6.3.9600.17415

Mslbfoprovider.sys 6.3.9600.18258

Msft_netlbfoteam.cdxml

Msft_netlbfoteam.format.ps1xml

Msft_netlbfoteammember.cdxml

Msft_netlbfoteammember.format.ps1xml

Msft_netlbfoteamnic.cdxml

Msft_netlbfoteamnic.format.ps1xml

Msft_netswitchteam.cdxml

Msft_netswitchteam.format.ps1xml

Msft_netswitchteammember.cdxml

Msft_netswitchteammember.format.ps1xml

Netlbfo.psd1

Netlbfo.types.ps1xml

Netswitchteam.psd1

Supersede(s):

3031598 Hyper-V host crashes and has errors when you perform a VM live migration in Windows 8.1 and Windows Server 2012 R2

http://support.microsoft.com/kb/3031598

2995392 Stop error 0x000000D1 after you install the Hyper-V role in Windows Server 2012 R2

http://support.microsoft.com/kb/2995392

2982439 A restarted virtual machine loses connectivity after you set the 2974619 "Private VLAN (PVLAN) networks" option in a Windows Server 2012 R2 environment

http://support.microsoft.com/kb/2982439

2974619 Hyper-V virtual machines freeze in Windows Server 2012 R2 in a Cloud Platform System environment

http://support.microsoft.com/kb/2974619

2974615 Network disconnects intermittently when network throughput is high in Windows Server 2012 R2 in Cloud Platform System

http://support.microsoft.com/kb/2974615

2965735 The CA Ping tool always fails for IPv6 addresses in Windows Server 2012 R2

http://support.microsoft.com/kb/2965735

2965178 VMQs cannot be created or the NVGRE offloads incorrectly on a Windows 8.1 or Windows Server 2012 R2-based Hyper-V host

http://support.microsoft.com/kb/2965178

3141074 "0x00000001" Stop error when a shared VHDX file is accessed in Windows Server 2012 R2-based Hyper-V guest
http://support.microsoft.com/?id=3141074

Update(s):

Vhdmp.sys 6.3.9600.18230

Supersede(s):

3036173 "0x00000050" Stop error when Hyper-V host crashes in Windows Server 2012 R2

http://support.microsoft.com/kb/3036173

3139896 Hyper-V guest may freeze when it is running failover cluster service together with shared VHDX in Windows Server 2012 R2
http://support.microsoft.com/?id=3139896

Update(s):

Pvhdparser.sys 6.3.9600.18229

3139164 Tracert command doesn't receive responses when you trace resources on Internet through Windows Server 2012 R2 HNV GW
http://support.microsoft.com/?id=3139164

Update(s):

Winnat.sys 6.3.9600.18226

3102354 Hyper-V generation 2 virtual machines can't start with some pass-through disks in Windows Server 2012 R2
http://support.microsoft.com/?id=3102354

Update(s):

Vmwp.exe 6.3.9600.18085 

Supersede(s):

3095308 VMs may not get additional memory although they're set to use Dynamic Memory in Windows Server 2012 R2

http://support.microsoft.com/kb/3095308

2942507 Server Manager shows an incorrect amount of memory on a computer that's running a Generation 2 Virtual Machine

http://support.microsoft.com/kb/2942507

2896800 Hyper-V guest OS does not shut down when you restart the host computer that is running Windows Server 2012 R2 or Windows 8.1

http://support.microsoft.com/kb/2896800

3092604 Network is corrupted between Guest OS and external network for VMs hosted on Windows 8.1 or Windows Server 2012 R2
http://support.microsoft.com/?id=3092604

Update(s):

Vmsif.dll 6.3.9600.17396

Vmsnetsetupplugin.dll 6.3.9600.17396

Vmswitch.sys 6.3.9600.18086

Vmsif.dll 6.3.9600.17396

Vmsntfy.dll 6.3.9600.17396

Vmswitch.sys 6.3.9600.18086

Vmsif.dll 6.3.9600.17396

Vmsntfy.dll 6.3.9600.17396

Vmswitch.sys 6.3.9600.18086

Vmsif.dll 6.3.9600.17396

Vmsntfy.dll 6.3.9600.17396

Vmswitch.sys 6.3.9600.18086

Supersede(s):

3014795 A third-party switch extension to the Microsoft VM switch cannot be disabled on Windows Server 2012 R2

http://support.microsoft.com/kb/3014795

2965733 The guest cluster is not available to service users after failover in a Hyper-V Network Virtualization environment

http://support.microsoft.com/kb/2965733

2956241 Network communication is very slow in a virtual machine that has the LSO feature of Hyper-V Network Virtualization enabled

http://support.microsoft.com/kb/2956241

2928439 The virtual machine network fails if the "minimum bandwidth weight" setting is enabled in Windows Server 2012

http://support.microsoft.com/kb/2928439

2913659 Windows Server 2012 R2-based Hyper-V server crashes when network traffic passes through a virtual switch
http://support.microsoft.com/kb/2913659

2902821 A virtual machine that is configured to use the DLC protocol does not connect to an SNA host on Hyper-V Server 2012 or Hyper-V Server 2012 R2
http://support.microsoft.com/kb/2902821

3087856 Non-queued commands are sent to disk controller on a Windows Server 2012 R2-based Hyper-V host server
http://support.microsoft.com/?id=3087856

Update(s):

Passthruparser.sys 6.3.9600.18008

3072381 "0xc0000017" error when you restart a UEFI-based computer in Windows
http://support.microsoft.com/?id=3072381

Update(s):

Winload.efi 6.3.9600.17904

Winload.exe 6.3.9600.17904

Winload.efi 6.3.9600.17904

Winload.exe 6.3.9600.17904

Winresume.efi 6.3.9600.17904

Winresume.exe 6.3.9600.17904

3072380 Hyper-V cluster unnecessarily recovers the virtual machine resources in Windows Server 2012 R2
http://support.microsoft.com/?id=3072380

Update(s):

Rdvgpuinfo.dll 6.3.9600.17396

Vmms.exe 6.3.9600.17904

Supersedes:

3037313 Old files are not removed after a migration of virtual machine storage in Windows 8.1 or Windows Server 2012 R2

http://support.microsoft.com/kb/3037313

3020717 VMMS crashes when you perform live migration and request VM information at the same time in Windows Server 2012 R2

http://support.microsoft.com/kb/3020717

3012714 Hyper-V storage migration failure and "ERROR_BAD_COMMAND" error in Windows Server 2012 R2 or Windows Server 2012

http://support.microsoft.com/kb/3012714

2966407 Backing up virtual machines fails when using the CSV writer after installation of update 2919355 in Windows

http://support.microsoft.com/kb/2966407

3068445 Virtual machines that host on Windows Server 2012 R2 may crash or restart unexpectedly
http://support.microsoft.com/?id=3068445

Update(s):

Csvfs.sys 6.3.9600.17891

Supesede(s):

3025091 Shared Hyper-V virtual disk is inaccessible when it's located in Storage Spaces on a Windows Server 2012 R2-based computer (Partially)

http://support.microsoft.com/kb/3025091

2970653 A SQL Server that is running in a Hyper-V virtual machine takes a long time to restore a database to a dynamic VHD

http://support.microsoft.com/kb/2970653

3068444 "An unrecoverable failure occurred inside the filter manager" error on a failover cluster node that hosts shared VHDx files
http://support.microsoft.com/?id=3068444  

Update(s):

Svhdxflt.sys 6.3.9600.17891

3063283 Update to improve the backup of Hyper-V Integrated components in Hyper-V Server 2012 R2
http://support.microsoft.com/?id=3063283

Update(s):

Windows5.x-hypervintegrationservices-x64.msi

Windows5.x-hypervintegrationservices-x64.xml

Windows6.x-hypervintegrationservices-x64.xml

Setup.exe 6.3.9600.17831

Windows5.x-hypervintegrationservices-x86.msi

Windows5.x-hypervintegrationservices-x86.xml

Windows6.x-hypervintegrationservices-x86.xml

Setup.exe 6.3.9600.17831

Supersede(s):

3046826 You cannot upgrade Hyper-V integration components or back up Windows virtual machines

http://support.microsoft.com/kb/3046826

2908415 Clustered shared volumes go offline or the Cluster service stops during VM backup on a Windows Server 2012 Hyper-V host server
http://support.microsoft.com/kb/2908415

3055292 Microsoft Hyper-V does not start on an AMD Carrizo-based computer that is running Windows 8.1 or Windows Server 2012 R2
http://support.microsoft.com/?id=3055292

Update(s):

Hvax64.exe 6.3.9600.17795

Hvix64.exe 6.3.9600.17795

Hvloader.efi 6.3.9600.17796

Hvloader.exe 6.3.9600.17796

Hvservice.sys 6.3.9600.17795

Kdhvcom.dll 6.3.9600.17795

Supersede(s):

3014069 Performance regressing in Hyper-V guest system in Windows Server 2012 R2 or Windows 8.1

http://support.microsoft.com/kb/3055292

3049448 Resolution of external DNS records on a Windows Server 2012 R2 Hyper-V guest cluster fails through a Hyper-V Network Virtualization Gateway
http://support.microsoft.com/?id=3049448

Update(s):

Winnat.sys 6.3.9600.17791

3049443 Live migration of virtual machine to another host fails on a Windows Server 2012 R2-based Hyper-V host server
http://support.microsoft.com/?id=3049443

Update(s):

Winmgmt.exe 6.3.9600.17415

Wmiaprpl.dll 6.3.9600.17415

Wmisvc.dll 6.3.9600.17818

Wmiprov.dll 6.3.9600.17818

Winmgmt.exe 6.3.9600.17415

Wmiaprpl.dll 6.3.9600.17415

3047280 "The URL cannot be resolved" error in DirectAccess and routing failure on HNV gateway cluster in Windows Server 2012 R2
http://support.microsoft.com/?id=3047280

Update(s ):

Cleanupmofonuninstall.exe 6.3.9600.17795

Mprapi.dll 6.3.9600.17795

Ramgmtpsprovider.dll.mui 6.3.9600.17795

Ramgmtpsprovider.mfl

Ramgmtpsprovider_uninstall.mfl

<snip, too many to list>

Pbkmigr.dll 7.2.9600.17485

Rasapi32.dll 6.3.9600.17795

Iprtprio.dll 6.3.9600.17415

Iprtrmgr.dll 6.3.9600.17415

Mprdim.dll 6.3.9600.17795

Rasmigplugin.dll 7.2.9600.17795

Rtm.dll 6.3.9600.17415

Mprapi.dll 6.3.9600.17795

Mprddm.dll 6.3.9600.17795

Supersede(s):

3022776 Update to add support for Generic Routing Encapsulation in Windows 8.1 and Windows Server 2012 R2

http://support.microsoft.com/kb/3022776

3031420 "100060" time-out error when you drain VM roles for CAU during VM live migration on Windows Server 2012 R2 compute nodes
http://support.microsoft.com/?id=3031420

Update(s):

Vmclusres.dll 6.3.9600.17630

Supersede(s):

2976884 "Access denied error" when Hyper-V Replica Broker goes online in a Windows Server 2012 or Windows Server 2012 R2 cluster

http://support.microsoft.com/kb/2976884

3027110 System may freeze if a reserved disk is mounted accidentally in Windows 8.1 or Windows Server 2012 R2
http://support.microsoft.com/?id=3027110

Update(s):

Ntfs.sys 6.3.9600.17631

Supersede(s):

2965471 VHDX virtual hard disk takes a long time to be created on an SMB share on a Windows 8.1 or Windows Server 2012 R2 Hyper-V host

http://support.microsoft.com/kb/2965471

2913695 OffloadWrite is doing PrepareForCriticalIo for the whole VHD in a Windows Server 2012 or Windows Server 2012 R2 Hyper-V host
http://support.microsoft.com/kb/2913695

3025091 Shared Hyper-V virtual disk is inaccessible when it's located in Storage Spaces on a Windows Server 2012 R2-based computer

http://support.microsoft.com/kb/3025091

Update(s):

Csvfs.sys 6.3.9600.18000 <-- superseded by KB3068445

Svhdxflt.sys 6.3.9600.18000

Mrxsmb20.sys 6.3.9600.18001

Mrxsmb.sys 6.3.9600.18001

Srv2.sys 6.3.9600.18001

Supersede(s):

2972251 Event 1002 when system file information folder is shared in Windows 8.1 or Windows Server 2012 R2

http://support.microsoft.com/kb/2972251

3022332 "Windows has detected an IP address conflict" error in Windows Server 2012 R2 or Windows Server 2008 R2 NLB nodes
http://support.microsoft.com/?id=3022332

Update(s):

Nlb.sys 6.3.9600.17627

2966870 Fix restart problems after you install update rollup 2919355 in Windows 8.1 or Windows Server 2012 R2
http://support.microsoft.com/?id=2966870

Update(s):

Storport.sys 6.3.9600.17122

2965739 NICs disappear and vSwitch becomes private in Windows Server 2012 R2
http://support.microsoft.com/?id=2965739

Update(s):

Netcfgx.dll 6.3.9600.17114

2964439 Hyper-V virtual machine backup leaves the VM in a locked state
http://support.microsoft.com/?id=2964439

Update(s):

Eventcls.dll 6.3.9600.16384

Vssapi.dll 6.3.9600.17120

Vsstrace.dll 6.3.9600.17120

2927767 Audio redirection stops 30 to 60 minutes after you connect to a guest operating system on a Hyper-V host computer that is running Windows
http://support.microsoft.com/?id=2927767

Update(s):

Audiodg.exe

Audioeng.dll

Audiokse.dll

Audioses.dll

Audiosrv.dll

Encdump.dll 5.0.1.1

Prod_audio-audiocore.ptxml

2925766 Windows Server 2012 R2 or Windows 8.1 crashes when virtual volumes are exposed to hyper-v virtual machines
http://support.microsoft.com/kb/2925766 

Update(s):

Spaceport.inf_loc

Spaceport.sys 6.3.9600.16508

2905600 The Vmwp.exe process on a Hyper-V host leaks memory in Windows 8 or Windows Server 2012
http://support.microsoft.com/kb/2905600

Update(s):

Vmrdvcore.dll 6.2.9200.20866

2894032 Clustered virtual machine cannot access LUNs over a Synthetic Fibre Channel after you perform live migration on Windows Server 2012 or Windows Server 2012 R2-based Hyper-V hosts
http://support.microsoft.com/kb/2894032

Update(s):

Synthfcvdev.dll 6.2.9200.16729

Synthfcvdev.dll 6.2.9200.20840 

More information:

=================

If you have Failover Clustering enabled:

List of Failover Cluster related hotfixes post RTM for Windows Server 2012 R2 RTM

http://blogs.technet.com/b/yongrhee/archive/2014/02/16/list-of-failover-cluster-related-hotfixes-post-rtm-for-windows-server-2012-r2-rtm.aspx Jump

If you have SCVMM 2012 R2, here is SCVMM 2012 R2 Update 1:

http://blogs.technet.com/b/yongrhee/archive/2014/02/06/update-1-for-scvmm-2012-r2-released.aspx Jump

2875120 Error 2927 when you add a Hyper-V server or a Hyper-V cluster node in System Center VMM

http://support.microsoft.com/kb/2875120

If you have RD Virtualization:

-------------------------------

2908810 Memory and deadlock issues for the RD Virtualization Host and RD Connection Broker role services in Windows 8.1

http://support.microsoft.com/kb/2908810

Update(s):

Vmrdvcore.dll 6.3.9600.16460

Tsrpc.dll 6.3.9600.16384

Tsvmhasvc.dll 6.3.9600.16460

Tsv_migplugin.dll 6.3.9600.16384

Terminalserversessiondirectoryrole.cmd   

Tssdis.exe 6.3.9600.16460

Tssdis_migplugin.dll 6.3.9600.16384

Tssessiondirectory.events.xml

The list has been moved to the Technet Wiki below.

List of Hyper-V related hotfixes post RTM for Windows 8.1 RTM and Windows Server 2012 R2 RTM
http://social.technet.microsoft.com/wiki/contents/articles/30353.list-of-hyper-v-related-hotfixes-post-rtm-for-windows-8-1-rtm-and-windows-server-2012-r2-rtm.aspx

This should help with getting the list updated sooner with the help of the WW community.

02:10