</script>alert(1)</script>

Hello,

We have been having this issue for years and have no clue how to solve. 

We have several Hyper-V hosts (Physical HP servers running Windows server 2012 R2 ) on premises and have around 2-4VMs sitting on each host server. These host servers and VMs sitting on them sometimes stop working.

the issue is the following:

When the issue happens to host, the host suddenly stops responding (unable to access shared folder, RDP and other services) but still pigable. VMs sitting on the problematic host is still functioning like normal. 

When the issue happens to VMs, the VM suddenly stops responding (unable to access shared folder, RDP and other services) but still pingable.

When the issue happens to VMs, I still can see "Press Ctrl+Alt+Delete to sign in" screen from the Hyper-V console but unable to log in,

When this happens, I cannot do anything so I turn the VM off from Hyper-V console (if we shut it down  from Hyper-V console, it will stuck for 10-20 mins and give us an error). when this happens to a host server, I just do a hard shutdown.

any help or information would be really appreciated. Thank you in advance.

Greetings Experts,

We have a hypervisor v2012-R2 hosting one production/critical VM (Guest OS Red Hat Linux 6.7)

This VM contain OS on VHDX file and another Virtual Fibre Channel LUN directly attached to the VM. 

**Problem related to the backup solution and as per the backup engineer he would like to (replace or convert or migrate) this LUN with VHDX file to be installed same as the OS Disk to be able to take the backup.

I know i cannot use Hyper-v replica (and the only way for replication is using array replica from the storage manager it self)

But is their alternatives or another options i am missing to achieve this?

Have been fighting this for awhile and it was working for awhile, but something seems to have changed so back to the drawing board.

Running Hyper-V on my Laptop, to run labs and test environments, and run into a lot of network issues where I do not get good connection on the VM or lose network connection on my laptop when the VMs are turned on.

Goal I am setting up is multiple VMs using internal switches, and a router vm running PFSense that handles the routing.  For the router VM I figure the best option would be to use the Default Switch for the WAN adapter.

From reading I have heard of issues and needs to disable the "Intel Access Filter driver" check box on the virtual adapters that created on the laptop, but not sure if this has truly helped or not, it seemed to, but being I am again seeing network drops I figure I need to configure something differently.

The reason for the PFSense router, is I am setting up a full environment of VMs (AD, SCCM, client machines), and it handles DHCP for me for the VMs and handles the routing for network boot and all that.

Anybody seen this issue where network constantly drops or gets very slow when setting up VMs, and are there any tips for best way to setup the network connections to avoid this problem when using Hyper V on mostly Wifi.

Dears all,

I have a win server 2012 R2 hosting backup domain controller on a virtual machine, suddenly we came last week and we found the virtual machine unable to boot the win server, we have tried to do all possible suggestion from the internet without luck.

kindly note that we don't have any snapshots or backup for the virtual machine,

is there any tool to fix this issue? or in such cases what we must to do?

Thank you,

I've followed all the instructions - it actually worked and then suddenly stopped working.

I am NOT in domain.

Symptoms: in server manager, I get: "Online - Verify that WinRM 3.0 service is installed, running, and required fw ports are open"

in Hyper-V manager, I get: An error occured while attempting to connect to server XXXXX. Check that Virtual Machine Management service is running and that you are authorized to connect to the server. More specifically, "The operation on computer xxxx failed: WinRM cannot complete the operation. Verify that the specified computer name is valid, that the computer is accessible over the network, and that a firewall exception for the WinRM service is enabled and allows access from this computer...."

I followed everything on this page: https://docs.microsoft.com/en-us/windows-server/virtualization/hyper-v/manage/Remotely-manage-Hyper-V-hosts

On server: I created local administrator (it works via remote desktop), enabled PSRemoting, Enabled WSManCredSSP -role Server, added my client computer to trusted hosts, added computer to hosts file.

On client, I also added server to trusted hosts, I went into gpedit and allowed delegating fresh credential,....

I did winrm quickconfig on both machines, set all networks to private,... disabled firewall completely, tried telneting onto 5985/5986 ports on both computers (works OK)...

I also followed some forum posts (additional command to allow more stuff) and it still does not work.

Any ideas? :-S It worked but it stopped working suddenly - I'm guessing some update or something broke it?

-- edit: yes, services are running:

PS C:\windows\system32> get-service winrm

Status   Name               DisplayName
------   ----               -----------
Running  winrm              Windows Remote Management (WS-Manag...


PS C:\windows\system32> get-service vmms

Status   Name               DisplayName
------   ----               -----------
Running  vmms               Hyper-V Virtual Machine Management

Thank you. Karel Grulich, MCSE, SBS

I have 3 Windows 2008 R2 servers running Hyper-V and Hyper-V Manager.

Hyper-V Manager running on two servers can collect to all servers.

One the other server, Hyper-V manager gives message "Cannot connect to the RPC service on computer 'xxx'. Make sure RPC service is running."

What is the fix for this problem?

Larry

We are planning to migrate from a physical machine to Hyper-V structure.

In our Hyper-V environment test, we get, in simple queries, better (or almost the same) response time than in physical machine.

But, in more sophisticate forms, the performance decreases about 10 times. For example: in physical machine the response time is less than 2" versus 22" in VM.

Could you help me, please?

Here are the details:

1. Isolated VBA code:

WkConnectionString= "Provider=SQLOLEDB;Data Source=INSTANCENAME;Initial Catalog=DBNAME;User ID=USERID;Password=XXXXX;"

For WkI = 1 To 20
    Set CnConexioDBNAME = New ADODB.Connection
    CnConexioDBNAME.Open WkConnectionString
    CnConexioDBNAME.Close
    Set CnConexioDBNAME = Nothing
Next WkI
** This code takes less than 2" to answer when runs in physical machine and 22" in VM

2. MsAccess forms:
   - The more sophisticated ones,  have 12 Combo Box with a pass-trough query as data source in every one.
   - Plus, three sub forms.

3. Languages and OS:

   - Forms developed in MsAccess 2013 (x86) with VBA.

   - SQL Server 2014 (SP3) (x64)

   - Installed in Windows Server 2012 R2 Standard (in the Physical machine)
      - DELL. 16Gb RAM. 2.4Ghz (2 processors). x64.

   - Installed in Windows Server 2016 Standard (in the Hyper-V VM)
      - DELL. 8Gb RAM, 1.7Gh, SSD. x64

   - Microsoft ODBC Driver 13 for SQL Server (x86)

3. Hyper-V VM (hyperv-2016 core)

   - VHDX on SSD  
   - Virtual machine Switch external
   - Generation 2.
   - Configuration 8.0

4. Clients

  - When accessing from W7 or WServer 2008 to the VM, the response time is 8"
  - When accessing form W10 or WServer 2012 to the VM, the response time is 22"
  - However, in both cases, when accessing to the physical machine, the response time is less than 2"

5. Hardware

   - NIC Intel i350,i210, broadcom netxtreme
   - VMQ: Disabled
   - BIOS: saving energy :  High Performance power plan

What size LUNs do you guys request from your storage team? When I worked with VMware I would request 5 to 10 TB LUNs. I obviously don't want one massive LUN and I don't was tons of small 1 TB LUNs so what's your sweet spot?

Thanks

Hi,

I am trying to move a windows 7 VM from Win 2012 Std R2 to Win 2012 Std but it is showing Operation failed. Is it due to the dissimilar versions of windows 2012? How to move a VM in the scenario? Can I just copy the VHDs to the other server and create a new VM with it?

Thanks.

Since applying Jan19 updates recently we have been having crashing issues with one of the nodes in 2016 H-V cluster

This seems to be related to overlapping CPU cores in the vswitch team although this error has only recently started after patching the servers recently.

Output from Get-NetAdapterRss|fl:

Name                                            : NIC2
InterfaceDescription                            : QLogic BCM57800 10 Gigabit Ethernet (NDIS VBD Client) #2
Enabled                                         : True
NumberOfReceiveQueues                           : 4
Profile                                         : NUMAStatic
BaseProcessor: [Group:Number]                   : :0
MaxProcessor: [Group:Number]                    : :
MaxProcessors                                   : 16
RssProcessorArray: [Group:Number/NUMA Distance] :
IndirectionTable: [Group:Number]                :

Name                                            : vEthernet (Internal 10GB Logic Switch)
InterfaceDescription                            : Hyper-V Virtual Ethernet Adapter
Enabled                                         : False
NumberOfReceiveQueues                           :
Profile                                         :
BaseProcessor: [Group:Number]                   : :
MaxProcessor: [Group:Number]                    : :
MaxProcessors                                   :
RssProcessorArray: [Group:Number/NUMA Distance] :
IndirectionTable: [Group:Number]                :

Name                                            : NIC4
InterfaceDescription                            : QLogic BCM57800 Gigabit Ethernet (NDIS VBD Client) #2
Enabled                                         : True
NumberOfReceiveQueues                           : 4
Profile                                         : NUMAStatic
BaseProcessor: [Group:Number]                   : :0
MaxProcessor: [Group:Number]                    : :
MaxProcessors                                   : 16
RssProcessorArray: [Group:Number/NUMA Distance] :
IndirectionTable: [Group:Number]                :

Name                                            : DMZ 1GB Logic Switch
InterfaceDescription                            : Microsoft Network Adapter Multiplexor Driver #2
Enabled                                         : True
NumberOfReceiveQueues                           : 0
Profile                                         : NUMAStatic
BaseProcessor: [Group:Number]                   : 0:0
MaxProcessor: [Group:Number]                    : 0:38
MaxProcessors                                   : 4
RssProcessorArray: [Group:Number/NUMA Distance] : 0:0/0  0:2/0  0:4/0  0:6/0  0:8/0  0:10/0  0:12/0  0:14/0
                                                  0:16/0  0:18/0  0:20/0  0:22/0  0:24/0  0:26/0  0:28/0  0:30/0
                                                  0:32/0  0:34/0  0:36/0  0:38/0
IndirectionTable: [Group:Number]                :

Name                                            : NIC1
InterfaceDescription                            : QLogic BCM57800 10 Gigabit Ethernet (NDIS VBD Client)
Enabled                                         : True
NumberOfReceiveQueues                           : 4
Profile                                         : NUMAStatic
BaseProcessor: [Group:Number]                   : :0
MaxProcessor: [Group:Number]                    : :
MaxProcessors                                   : 16
RssProcessorArray: [Group:Number/NUMA Distance] :
IndirectionTable: [Group:Number]                :

Name                                            : Internal 10GB Logic Switch
InterfaceDescription                            : Microsoft Network Adapter Multiplexor Driver #3
Enabled                                         : True
NumberOfReceiveQueues                           : 0
Profile                                         : NUMAStatic
BaseProcessor: [Group:Number]                   : 0:0
MaxProcessor: [Group:Number]                    : 0:38
MaxProcessors                                   : 4
RssProcessorArray: [Group:Number/NUMA Distance] : 0:0/0  0:2/0  0:4/0  0:6/0  0:8/0  0:10/0  0:12/0  0:14/0
                                                  0:16/0  0:18/0  0:20/0  0:22/0  0:24/0  0:26/0  0:28/0  0:30/0
                                                  0:32/0  0:34/0  0:36/0  0:38/0
IndirectionTable: [Group:Number]                :

Name                                            : SLOT 1 Port 4
InterfaceDescription                            : Broadcom NetXtreme Gigabit Ethernet #4
Enabled                                         : True
NumberOfReceiveQueues                           : 4
Profile                                         :
BaseProcessor: [Group:Number]                   : :0
MaxProcessor: [Group:Number]                    : :
MaxProcessors                                   : 16
RssProcessorArray: [Group:Number/NUMA Distance] :
IndirectionTable: [Group:Number]                :

Name                                            : SLOT 1 Port 3
InterfaceDescription                            : Broadcom NetXtreme Gigabit Ethernet
Enabled                                         : True
NumberOfReceiveQueues                           : 4
Profile                                         : NUMAStatic
BaseProcessor: [Group:Number]                   : 0:0
MaxProcessor: [Group:Number]                    : 0:38
MaxProcessors                                   : 16
RssProcessorArray: [Group:Number/NUMA Distance] : 0:20/0  0:22/0  0:24/0  0:26/0  0:28/0  0:30/0  0:32/0  0:34/0
                                                  0:36/0  0:38/0  0:0/32767  0:2/32767  0:4/32767  0:6/32767
                                                  0:8/32767  0:10/32767
                                                  0:12/32767  0:14/32767  0:16/32767  0:18/32767
IndirectionTable: [Group:Number]                :

Name                                            : SLOT 1 Port 2
InterfaceDescription                            : Broadcom NetXtreme Gigabit Ethernet #3
Enabled                                         : True
NumberOfReceiveQueues                           : 4
Profile                                         :
BaseProcessor: [Group:Number]                   : :0
MaxProcessor: [Group:Number]                    : :
MaxProcessors                                   : 16
RssProcessorArray: [Group:Number/NUMA Distance] :
IndirectionTable: [Group:Number]                :

Name                                            : SLOT 1 Port 1
InterfaceDescription                            : Broadcom NetXtreme Gigabit Ethernet #2
Enabled                                         : True
NumberOfReceiveQueues                           : 4
Profile                                         : NUMAStatic
BaseProcessor: [Group:Number]                   : 0:0
MaxProcessor: [Group:Number]                    : 0:38
MaxProcessors                                   : 16
RssProcessorArray: [Group:Number/NUMA Distance] : 0:20/0  0:22/0  0:24/0  0:26/0  0:28/0  0:30/0  0:32/0  0:34/0
                                                  0:36/0  0:38/0  0:0/32767  0:2/32767  0:4/32767  0:6/32767
                                                  0:8/32767  0:10/32767
                                                  0:12/32767  0:14/32767  0:16/32767  0:18/32767
IndirectionTable: [Group:Number]                :

Name                                            : NIC3
InterfaceDescription                            : QLogic BCM57800 Gigabit Ethernet (NDIS VBD Client)
Enabled                                         : True
NumberOfReceiveQueues                           : 4
Profile                                         : NUMAStatic
BaseProcessor: [Group:Number]                   : :0
MaxProcessor: [Group:Number]                    : :
MaxProcessors                                   : 16
RssProcessorArray: [Group:Number/NUMA Distance] :
IndirectionTable: [Group:Number]                :

COuld someone pls confirm if the correct action would be: (NIC1 and 2 are the team members of the 'Internal 10GB Logic Switch')

Set-NetAdapterRss -name NIC1 -BaseProcessorNumber 0 -MaxProcessorNumber 7

Set-NetAdapterRss -name NIC2 -BaseProcessorNumber 8 -MaxProcessorNumber 16

thanks

Hi,

I was able to always connect to my Hyper-v server. When i changed my password on my dc username then i was not able to connect to my server. i get this error "an error occurded white attemting to connect to server... the operation on computer failed" and can't figured out what is happend.



Hi,

So I am testing with Hyper-V Server 2019, which I deployed to three brand new HP Proliant gen10 machines. I'll test on them for a while before putting them in production. Installation was a breeze, as with Hyper-V 2016. However, I can't seem to enable RDP on Hyper-V Server 2019. When I enable through the menu, it says it's done so, but alas, netstat -a reveals there isn't even a process listenening on port 3389.

I checked the registry, HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Terminal Server is correct. The required services are running. Firewall is completely disabled through netsh for testing. Remote administration is working fine, RDP is not listening at all.

Anyone else ran into this?

Could not find any info how to convert them. Need to upgrade HV to 2016, so eventually I can use replication of shared disks

Of course with "liitle" vhdx I can do just d-2-d data copy, but with disk of few Tb I simply do not have same space on array to create them one more time & then wait for data copy to happen

Thanks

Seb

Hi i have a server with hyper v running a few vms with some game servers  my isp provide me with 5 static ips and i have access to more if needed

what i am wanting to do is assign the static ips to the vms  right now  my isp router dose not have a lan network so i have tp link router with dhcp and my server  is connected to that on 192.168.0.8  with a subnet on 255.255.255.0 and default gate way of 192.168.0.1  my tp link router wan is 94.x.x.34 and my ips default gate way is is 94.x.x.33   with a subnet of 255.255.255.240 i still have 94.x.x.35-38 free that i would like to use 

i have tryed a few things but nothing works for me i have no idea what im doing tbh  

I utilize Shadow Copies (for quick file restore) on dedicated volume & Dedup on 2012 R2 servers.

If I convert existing shared disks (vhdx to vhds) I assume all Shadow Copies will be gone.

And Dedup?

Thanks

Seb

I took my Windows Server 2016 Datacenter test server in my home lab (Dell R710 with two X5650s and 32GB of RAM) and installed Server 2019 Datacenter on it to try out the new features that are centered around VMs (Hyper-V) and data deduplication. The OS install went fine, but after enabling Hyper-V in Server Manager, the system goes through its normal reboot that occurs during Hyper-V enablement, then it proceeds to boot loop. Windows Server 2019 install media's boot repair does not fix the issue, and I cannot get in via Safe Mode. Any advice would be greatly appreciated.