Summary
This article documents recommended hotfixes, product updates, and known solutions that are currently available for Windows Server 2012 and Windows Server 2012 R2 Hyper-V Network Virtualization (HNV) environments.
More Information
The updates are listed by the operating system to which they apply.
Windows Server 2012 R2
Microsoft System Center 2012 R2 Virtual Machine Manager (VMM)
Microsoft System Center 2012 VMM
HNV troubleshooting and data collection
Other known issues and solutions
Windows Server 2012 R2
| Date added | Knowledge Base article | Title |
| June 11, 2014 | 2953218 | A connection request fails for some NAT instances in Windows Server 2012 R2 |
| June 11, 2014 | 2956241 | Network communication is very slow in a virtual machine that has the LSO feature of Hyper-V Network Virtualization enabled |
| June 11, 2014 | 2965178 | VMQs cannot be created or the NVGRE offload incorrectly on a Windows 8.1 or Windows Server 2012 R2-based Hyper-V |
| June 12, 2014 | 2918813 | Windows Server 2012 R2 NVGRE gateway cannot establish outgoing connections |
| June 12, 2014 | 2913659 | Windows Server 2012 R2-based Hyper-V server crashes when network traffic passes through a virtual switch |
| June 12, 2014 | 2965740 | 0x000000D6 Stop error when a VM network adapter is uninstalled in Windows 8.1 or Windows Server 2012 R2 |
| June 12, 2014 | 2965733 | The guest cluster is not available to service users after failover in a Hyper-V Network Virtualization environment |
| June 12, 2014 | 2965736 | Stop error or inconsistent behavior across unrelated components in Windows Server 2012 R2 |
| June 12, 2014 | 2965739 | NICs disappear and vSwitch becomes private in Windows Server 2012 R2 |
| June 17, 2014 | 2964814 | Virtual machine network fails when you start the second VM on a Windows Server 2012 R2-based Hyper-V server |
| August 7, 2014 | 2967917 | July 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 |
| September 3, 2014 | 2973047 | VLAN tagging breaks the VM connection with a third-party forwarding extension and HNV in Windows Server2012 R2 |
| September 3, 2014 | 2979957 | Memory usage of Wmiprvse.exe keeps increasing when you run an application or script in Windows |
| September 3, 2014 | 2975719 | August 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 |
| December 5, 2014 | 3000850 | November 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 |
| March 20, 2015 | 3031598 | Hyper-V host crashes and has errors when you perform a VM live migration in Windows 8.1 and Windows Server 2012 R2 |
| May 13, 2015 | 3049448 | Resolution of external DNS records on a Windows Server 2012 R2 Hyper-V guest cluster fails through a Hyper-V Network Virtualization Gateway |
| May 13, 2015 | 3047280 | "The URL cannot be resolved" error in DirectAccess and routing failure on HNV gateway cluster in Windows Server 2012 R2 |
| June 11, 2015 | 3049443 | Live migration of virtual machine to another host fails on a Windows Server 2012 R2-based Hyper-V host server |
| June 26, 2015 | 3044457 | "STATUS_PURGE_FAILED" error occurs in Windows Server 2012 R2 |
| August 11, 2015 | 3078411 | Tenant VMs lose network connectivity if NAT gateway VM exhausts all TCP/IP ephemeral ports in Windows Server 2012 R2 |
| November 4, 2015 | 3091402 | Site-to-site VPN goes down in Windows 8.1 or Windows Server 2012 R2 |
| April 12, 2016 | 3139164 | Tracert command doesn't receive responses when you trace resources on Internet through Windows Server 2012 R2 HNV GW |
Microsoft System Center 2012 R2 Virtual Machine Manager (VMM)
| Date added | Knowledge Base article | Title |
| June 11, 2014 | 2932926 | Description of Update Rollup 2 for System Center 2012 R2 Virtual Machine Manager |
| August 7, 2014 | 2965414 | Update rollup 3 for System Center 2012 R2 Virtual Machine Manager |
| December 5, 2014 | 2992024 | Update Rollup 4 for System Center 2012 R2 Virtual Machine Manager |
| May 13, 2015 | 3023195 | Description of the security update for Update Rollup 5 for System Center 2012 R2 Virtual Machine Manager |
| May 13, 2015 | 3050317 | Update Rollup 6 for System Center 2012 R2 Virtual Machine Manager |
| July 28, 2015 | 3066340 | Update Rollup 7 for System Center 2012 R2 Virtual Machine Manager |
| November 2, 2015 | 3096389 | Update Rollup 8 for System Center 2012 R2 Virtual Machine Manager |
| February 13, 2016 | 3129784 | Update Rollup 9 for System Center 2012 R2 Virtual Machine Manager |
Microsoft System Center 2012 VMM
| Date added | Knowledge Base article | Title |
| June 11, 2014 | 2937529 | VLAN information in Virtual Machine Manager is not displayed correctly |
HNV troubleshooting and data collection
| Knowledge Base article | Title |
| 3069275 | Troubleshooting and data collection in Windows Server 2012 R2 Hyper-V Network Virtualization (HNV) environments |
| 2968430 | How to enable debug logging for Hyper-V Network Virtualization |
Other known issues and solutions
| Date added | Knowledge Base article | Title |
| June 11, 2014 | 2970306 | Intermittent connectivity issues and dropped connections from HNV-enabled VMs to Azure resources over S2S VPN through NVGRE gateway |
| June 11, 2014 | 2974395 | Communication over HNV Gateway fails intermittently if SkipAsSource not set |
| June 11, 2014 | 2902166 | Poor network performance on virtual machines on a Windows Server 2012 Hyper-V host if VMQ is enabled |
| December 5, 2014 | 3003527 | Description of support boundaries for using Windows Network Load Balancer with Hyper-V Network Virtualization networks |
| December 5, 2014 | 3021753 | Reduced MTU size that is reported to guest virtual machines in HNV environments may not function correctly |
| May 13, 2015 | 2986895 | Virtual machines lose network connectivity when you use Broadcom NetXtreme 1-gigabit network adapters |
| May 13, 2015 | 3056701 | Can't establish site-to-site VPN between HNV Gateway and Cisco ASA in Windows Server 2012 R2 |
| January 12, 2016 | 3135020 | Recommended hotfixes, updates, and known solutions for Windows Server 2012 R2 Hyper-V environments |