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 R2http://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 R2http://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
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 Machinehttp://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 R2http://support.microsoft.com/kb/3014795
2965733 The guest cluster is not available to service users after failover in a Hyper-V Network Virtualization environmenthttp://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 enabledhttp://support.microsoft.com/kb/2956241
2928439 The virtual machine network fails if the "minimum bandwidth weight" setting is enabled in Windows Server 2012http://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 R2http://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 R2http://support.microsoft.com/kb/3020717
3012714 Hyper-V storage migration failure and "ERROR_BAD_COMMAND" error in Windows Server 2012 R2 or Windows Server 2012http://support.microsoft.com/kb/3012714
2966407 Backing up virtual machines fails when using the CSV writer after installation of update 2919355 in Windowshttp://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 VHDhttp://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 machineshttp://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
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 hosthttp://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
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 6.1.7601.17514
Audioeng.dll 6.1.7601.22578
Audiokse.dll 6.1.7601.22578
Audioses.dll 6.1.7601.22578
Audiosrv.dll 6.1.7601.22578
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
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.