Hi!

I am having problems with activation of two virtual machines... virtual machines are installed from downloaded 2016 evaluation iso.

host server is 2019 stardard (activated)

I am getting 0xC004FD03 error.

I used AVMA key (for 2016 standard) C3RCX-M6NRP-6CXC9-TW2F2-4RHYD

I also tried this : https://victorhomocea.wordpress.com/2016/12/27/this-edition-cannot-be-upgraded-how-to-activate-windows-server-2016-evaluation/

any hints?

Dear All,

Thank you in advance if are able to help me solve a problem.

I am a total newbee regarding VMs but I am stuck to solve this.

We have a physical machine Windows Server 2016 based which host 2 VMs and 1 is no longer working properly.

After a lack of disk space a local back-up crashed.

Hyper-V apparently have created multiple check-points.

The treeview of my VM shows, 2 Levels with Blue Icon and 4 subsequent non-blue, sorry for the non technical description ;-)

I have only 3 files, 1 .vhdx and 2 .avhdx.

I can set the VM to point to my vhdx file and the inspection goes well.

I have reconnected the avhdx from earliest to latest using both Hyper-V Manager and PowerShell (ignoring Id Mismatch).

Get-VHD command says correct parent-child relationships but says files are not attached.

I can start the VM but it is in initial state without data contained in the checkpoints.

I have tried to delete some checkpoints but with no success.

It's been 2 days and I am running out of ideas, any help would really be much much appreciated.

Warm regards,

Thomas

Hello,

One of our hyper V machines got rebooted and i need some help figuring it out why. Here are the error from event viewer.

---------------15268

Failed to get the disk information.

----------------12240

The description for Event ID 12240 from source Microsoft-Windows-Hyper-V-VMMS cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer.

If the event originated on another computer, the display information had to be saved with the event.

The following information was included with the event: 

C:\ClusterStorage\Volume1\MRPV2\MRPV2.vhdx
%%2147942403
0x80070003

The locale specific resource for the desired message is not present

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

----------------------157

The hypervisor did not enable mitigations for CVE-2018-3646 for virtual machines because HyperThreading is enabled and the hypervisor core scheduler is not enabled. To enable mitigations for CVE-2018-3646 for virtual machines, enable the core scheduler by running "bcdedit /set hypervisorschedulertype core" from an elevated command prompt and reboot.

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

Available processor sets of the underlying physical NICs belonging to the LBFO team NIC /DEVICE/{9B7F0FDA-BF87-43D3-8548-DE879D9F952E} (Friendly Name: Microsoft Network Adapter Multiplexor Driver) on switch 449421A3-CB90-4D47-B8E8-824DACB58C1C (Friendly Name: HYPERV PROD VSWITCH) are not configured correctly. Reason: The processor sets overlap when LBFO is configured with sum-queue mode.

ferouze

hi there i would like to connect iscsi volume to one of my guest vms

my question is about the networking.....

my iscsi is on vlan 10 and my normal vm traffic on vlan 1

i have dedicated iscsi nics on my hyper-v hosts (using 10 GIG)

my vm traffic is on 2 x 1 G NICs (teamed) . but only 1G. 

Do i create a new virtual switch or just trunk the existing virtual switch even tho its 1G ?

I don't see anyway to create a new virtual switch and utilize my 10G iscsi interfaces

Hi,

I'm trying to create a safe browsing environment for all the online activity I'd like to isolate from my personal information and be safe from malware. As far as I know it's possible by using a hyper-v guest for browsing sites I don't want to be able to see my personal information. For example I use my physical computer (equipped with antivirus protection) for logging into my bank account and other official stuff. I don't want other sites like facebook, webshops or non-safe websites to track my personal data so I'd like to browse these sites in an isolated environment. I'm not looking for a way to hide from authorities. I don't even think it would be possible... So please, don't suggest Tor and other solutions like that. I'm just looking for a way to hide from those sites abusing my personal information by following me everywhere. Also it would be my first line of defense against malware activity when browsing/downloading stuff that's not entirely safe or testing/trying applications that are not yet proven to be safe. So my question is if you could give me a list of settings I should use in hyper-v to completely (or as much as possible) isolate my guest OS from the host so there'd be no information leaking.

I have a threadripper 1950x and had hyper-v installed to run a few vms but have run into an odd issue and am curious if anyone else has run into it as well, and if there is a fix.

So the issue is, when hyper-v is installed, my liquid cooler (kraken x62) cannot seem to read the temps properly from the cpu. My cam software should scale up fan speed and pump speed based on this reading, but it doesnt. When I uninstall hyper-v everything runs fine and scales as it should.

I also tried running the ryzen master utility while hyper-v was installed but it cannot run due to VBS and requests that you disable VBS before running it again.

If anyone has run into this and knows whether or not there is a solution please let me know as I would like to run a few vms but am currently worried about my processor overheating.

Hello,

yesterday i wanted to understand CPU-Usage-Display from VM's and Hypervisor-Hosts and i red a lot of regarding stuff.

First question:

A lot of posts say, that the display in the taskmanager does only show the usage of the host-OS vCPU, but not of the physical. While i checked the CPU-Usage, i got another picture! The Taskmanager of the HyperV-Host seems to show the exactly same values as here the "logical CPU of hypervisor" (i am not sure if microsoft made a mistake in the translation, was hard to find the counter because it's listed under L what i didnt expect), that you can see here with the fat red line.

So i am wandering if microsoft changed the behavier of the taskmanager in Server2016 (what is the System i made this tests on), or if i misunderstood something!

while i recorded this graphs, i started CPU-Burn.

within the first peak of 100% CPU-Usage, i ran CPU-Burn on the Hyper-V-Host, so the blue line goes to 100% and the fat red one aswell. okay, this seems to be logical.

within the second peak of 100% CPU-Usage, i ran CPU-Born on one of the HyperV-VMs, that has assigned 11 vCPU's (while the system has 12 logical cores), so it is limited to 95% what we can see within the fat line.

what i dont understand is: what does the thin red line shows? if it is the sum of all virtual cpu's it should show aswell almost 95% CPU-usage, but it just shows something like 35% which makes no sense at all to me. can somebody explain that?

last but not least, the HyperV-Manager has also a CPU-Usage display, which does not correspondent to the CPU-Usage-display inside the taskmanager of the VM, and also does not correspondent to the relative ammount of usage of the physical CPU - as far as i understand everything right and as far as i found the right counter to display the usage of the physical CPU.

i hope, someon can bring light into the dark!

to give a bit of background we have a 2016 server hosting a windows 2008 VM

Someone created a checkpoint or windows server backup did, not too sure as to the initial cause.

The hard drive started to fill up with .avhdx files.

due to limited space we moved 2 of the storage disks for the VM to another drive and manually merged the .vhdx files back to the parents.

they are all now merged back and vm working fine. however the checkpoint is still showing in the hyper-v management interface and subsequesnt backups have started to create avhdx files.

Now the question, should i run Get-VM -name | remove-vmsnapshot to remove the checkpoints or are there other options

thanks in advance

Dear Microsoft!

On https://www.microsoft.com/en-us/evalcenter/evaluate-hyper-v-server-2019 you link the hyper v core server setup. However, it only leads to https://cloudblogs.microsoft.com/windowsserver/2018/11/13/update-on-windows-server-2019-availability/ and there is no download available.

When are you planning to make it available?

By the way: The download that was briefly online https://software-download.microsoft.com/download/pr/17763.1.180914-1434.rs5_release_SERVERHYPERCORE_OEM_X64FRE_EN-US.ISO is barely usable for 2 reasons:

A after installing it and activating Remote desktop, the server does not start to listen on port 3389. No RDP possible!

B Trying to do an in-place upgrade from Hyper-V Server 2016 leads to an error: "The installation failed in the SAFE_OS phase with an error during SET_Product_Key operation"

 We have a redistribute RHEL 7.6 with kernel- and also hypervisor <g class="gr_ gr_39 gr-alert gr_gramm gr_inline_cards gr_run_anim Style multiReplace" data-gr-id="39" id="39"><g class="gr_ gr_35 gr-alert gr_spell gr_inline_cards gr_disable_anim_appear ContextualSpelling" data-gr-id="35" id="35">rpms</g> .</g>

 even when we enable the <g class="gr_ gr_112 gr-alert gr_gramm gr_inline_cards gr_run_anim Style multiReplace" data-gr-id="112" id="112">networking  the</g> system initially pings and then is unable to ping out.

Feb 27 19:11:38 <g class="gr_ gr_37 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling ins-del multiReplace" data-gr-id="37" id="37">testmc</g> <g class="gr_ gr_38 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling ins-del multiReplace" data-gr-id="38" id="38">systemd</g>: Stopping System Logging Service...
Feb 27 19:11:38 testmc rsyslogd: [origin software="rsyslogd" swVersion="8.24.0" x-pid="1284" x-info="http://www.rsyslog.com"] exiting on signal 15.
Feb 27 19:11:38 testmc <g class="gr_ gr_40 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling ins-del multiReplace" data-gr-id="40" id="40">systemd</g>: Starting System Logging Service...
Feb 27 19:11:38 testmc rsyslogd: [origin software="rsyslogd" swVersion="8.24.0" x-pid="7485" x-info="http://www.rsyslog.com"] start
Feb 27 19:11:38 testmc systemd: Started System Logging Service.
Feb 27 19:11:38 <g class="gr_ gr_50 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling ins-del multiReplace" data-gr-id="50" id="50">testmc</g> <g class="gr_ gr_51 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling ins-del multiReplace" data-gr-id="51" id="51">systemd</g>: Starting CARS <g class="gr_ gr_52 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling ins-del multiReplace" data-gr-id="52" id="52">debugd</g> (debug daemon)...
Feb 27 19:11:38 testmc systemd: PID file /run/debugd.pid not readable (yet?) after start.
Feb 27 19:11:38 testmc systemd: Started CARS debugd (debug daemon).
Feb 27 19:11:38 testmc debugd: process 7498 started at Wed Feb 27 19:11:38 2019

Feb 27 19:11:39 <g class="gr_ gr_41 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling ins-del multiReplace" data-gr-id="41" id="41">testmc</g> <g class="gr_ gr_42 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling ins-del multiReplace" data-gr-id="42" id="42">systemd</g>: Stopping IPv4 firewall with <g class="gr_ gr_43 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling" data-gr-id="43" id="43">iptables</g>...
Feb 27 19:11:39 testmc iptables.init: iptables: Setting chains to policy ACCEPT: filter [  OK  ]
Feb 27 19:11:39 testmc iptables.init: iptables: Flushing firewall rules: [  OK  ]
Feb 27 19:11:39 testmc cdpd: debugd seems to have crashed, abandoning it

Feb 27 19:13:09 <g class="gr_ gr_53 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling ins-del multiReplace" data-gr-id="53" id="53">testmc</g> <g class="gr_ gr_54 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling ins-del multiReplace" data-gr-id="54" id="54">systemd</g>: <g class="gr_ gr_55 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling" data-gr-id="55" id="55">iptables</g>.service stopping timed out. Terminating.
Feb 27 19:13:09 testmc iptables.init: iptables: Unloading modules:
Feb 27 19:14:39 testmc systemd: iptables.service stop-final-sigterm timed out. Killing.
Feb 27 19:15:01 testmc systemd-logind: Failed to create /run/user: File exists
Feb 27 19:16:09 testmc systemd: iptables.service still around after final SIGKILL. Entering failed mode.
Feb 27 19:16:09 testmc systemd: Unit iptables.service entered failed state.
Feb 27 19:16:09 testmc systemd: iptables.service failed.
Feb 27 19:16:09 <g class="gr_ gr_44 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling ins-del multiReplace" data-gr-id="44" id="44">testmc</g> <g class="gr_ gr_45 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling ins-del multiReplace" data-gr-id="45" id="45">systemd</g>: Starting IPv4 firewall with <g class="gr_ gr_46 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling" data-gr-id="46" id="46">iptables</g>...
Feb 27 19:16:10 <g class="gr_ gr_47 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling ins-del multiReplace" data-gr-id="47" id="47">testmc</g> <g class="gr_ gr_48 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling ins-del multiReplace" data-gr-id="48" id="48">systemd</g>: Started IPv4 firewall with <g class="gr_ gr_49 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling" data-gr-id="49" id="49">iptables</g>.
Feb 27 19:16:10 testmc NCS: Starting NCS: #033[?25l#033[?1c
Feb 27 19:16:13 testmc kernel: INFO: task modprobe:9468 blocked for more than 120 seconds.
Feb 27 19:16:13 testmc kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Feb 27 19:16:13 testmc kernel: modprobe        D ffff90e954b58000     0  9468   9466 0x00000080
Feb 27 19:16:13 testmc kernel: Call Trace:
Feb 27 19:16:13 testmc kernel: [<ffffffffb3968b69>] schedule_preempt_disabled+0x29/0x70
Feb 27 19:16:13 testmc kernel: [<ffffffffb3966ab7>] __mutex_lock_slowpath+0xc7/0x1d0
Feb 27 19:16:13 testmc kernel: [<ffffffffc049b000>] ? 0xffffffffc049afff
Feb 27 19:16:13 testmc kernel: [<ffffffffb3965e9f>] mutex_lock+0x1f/0x2f
Feb 27 19:16:13 testmc kernel: [<ffffffffb382e249>] register_pernet_subsys+0x19/0x40
Feb 27 19:16:13 testmc kernel: [<ffffffffc049b011>] ip_tables_init+0x11/0x1000 [ip_tables]
Feb 27 19:16:13 testmc kernel: [<ffffffffb320210a>] do_one_initcall+0xba/0x240
Feb 27 19:16:13 testmc kernel: [<ffffffffb331906c>] load_module+0x272c/0x2bc0
Feb 27 19:16:13 testmc kernel: [<ffffffffb35a32a0>] ? ddebug_proc_write+0x100/0x100
Feb 27 19:16:13 testmc kernel: [<ffffffffb33195ef>] SyS_init_module+0xef/0x140
Feb 27 19:16:13 testmc kernel: [<ffffffffb3974ddb>] system_call_fastpath+0x22/0x27

I goto the hyperV manager and change the networking to disable and enable the network adapter <g class="gr_ gr_352 gr-alert gr_gramm gr_inline_cards gr_run_anim Style multiReplace" data-gr-id="352" id="352">and  everything</g> starts working.

Any clues as to what rpm I may be missing or config to fix this and automatically get my network adapter up.

on the REHL7.5 version of the kernel along with  open-<g class="gr_ gr_313 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling ins-del multiReplace" data-gr-id="313" id="313">vm</g>-tools - everything works <g class="gr_ gr_384 gr-alert gr_gramm gr_inline_cards gr_run_anim Style multiReplace" data-gr-id="384" id="384">fine ,</g> I <g class="gr_ gr_394 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling ins-del multiReplace" data-gr-id="394" id="394">dont</g> have the hyper* <g class="gr_ gr_417 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling" data-gr-id="417" id="417">rpms</g> 

Hello there,

We (Systola GmbH) provide vhdxtool utility which enables fast creation of VHDX files.

Recently a customer asked us to implement VHD Set files support. So I'm looking for the VHD Set file format specification. But it does not seem to be available unlike VHD/VHDX file format specifications which Microsoft published years ago.

I would like to know if HyperV involved Microsoft employees reading this group can help obtaining the VHD Set specification. Or maybe confirm that absence of the spec is intentional and it's not going to be published.

Best regards,

Kirill Kovalenko

So I have an established Server 2016 Hyper-V Cluster, running a variety of Windows server VM's.

If I take an existing File Server VM, it can run on any one of the 4 nodes and can be live migrated around easily. (I mean general purpose file server for users documents)

What options/solutions are there to both increase resilience and ease maintenance tasks for file servers?

We already use DFS-N so the FS would be accessed from \\DOMAIN\Share\ by the users, but only the FS VM itself is contained in the DFS-N root/config. (This was simply done after I got fed up with UNC paths changing every time I replaced a physical FS, way back when!)

I have done various reading online and I feel I'm missing a concept or a solution here.

What I really want, is a 2nd FS VM, that accesses the same Data drive that's being shared by the first VM, that can be added as a 2nd server in the DFS-N config, so that if one FS VM is offline for maintenance (for example) Staff can still access their data on the \\DOMAIN\Share. It would make it easier for me to do maintenance during the day with a 2nd, or even 3rd VM running.

Maintenance on the Hyper-V Custer Nodes is easy during the day, I just live migrate running VM's to another node and carry on with the work.

I have read up on host-clusters, shared VHDX files but I am still confused as to how to achieve my goal.

If it makes any difference, this is all running on a Dell VRTX server, which has 4 server blades and built in local storage thats made available to all 4 blades via MPIO.

Hello

In defining an Internal Network in Hyper-V, it says that the VM can communicate with other VMs and with the Physical Host.

However in the tests I did the VM can not ping the Physical Host, it only can ping if I change to External Network.

The definition also says that a VM configured with External network can not access the physical network.

Now the Host to be accessed in the physical network, as would the VM access configured with Internal Network, to the physical host, if I can not ping the physical host?

The firewall was disabled in both directions for testing and even then I can not ping the physical host, the VM being configured with Internal Network.

I also put the VM in the same physical host subnet

I wonder if I'm getting it wrong or is this normal?

Hi,

Host: Windows 2012 R2
VM:   Windows 2012 R2
Storage: Direct Attached (Dell PowerVault MD3400)

I have a VM that is used as a productionFile Server.  This has a number of vhdx's (C: OS, D: Data Y: Pagefile and a 10TB Shares disk that is mounted to a folder in D:).

Recently a backup (Altaro) has created a recovery checkpoint and failed (31st August). Consequently the checkpoint file never got deleted and therefore I have a number of avhdx's.  In Hyper-V Manager there is no option to to Delete or Delete the Subtree.  Also there have been no backups since this date as another (inconsequential) VM suffered the same fate and backups just kept creating new recovery checkpoints.

Running Get-VMSnapshot -VMName hstv.artemis gives this.

VMName       Name                                            SnapshotType CreationTime        ParentSnapshotName
------       ----                                            ------------ ------------        ------------------
hstv.artemis hstv.artemis - Backup - (31/08/2016 - 16:39:31) Recovery     31/08/2016 16:41:33

Trying Get-VMSnapshot -VMName hstv.artemis | Remove-VMSnapshot fails with (Cannot delete checkpoint: Catastrophic failure (0x8000FFFF).

My research indicates my only option is to do an offline manual merge (on copies) of the disks to get them all back into single vhdx's.

1. Is this my only option?
2. What would happen to the VM Snapshot files?

Thanks
Tony

Hello, 

I tend to have a few VM's with "leftovers" from Veeam Backup Jobs - and the only way to delete them is by doing this :

https://blog.workinghardinit.work/2015/10/15/remove-lingering-backup-checkpoints-from-a-hyper-v-virtual-machine

Get-VMSnapshot -ComputerName "MyHyperVHost" -VMName "VMWithLingeringBackupCheckpoint" | Remove-VMSnapshot

Hyper-V is running on Server 2016 Datacenter with Veeam Backup and Replication 9.5 Update 3
https://www.veeam.com/kb2353

So - anyone else experiencing this?

Dear Team,

We are facing one problem in our Hyper V environment. Hope you guys can help me out. Let me explain it what the issue was,

We have installed Hyper V role on windows server 2012 R2 and the machine was up to dated with windows patches. Then we createdExternal vSwitch and Internal vSwitch. On the Host we assign the Internal vSwitch IP address as 192.168.137.1 and subnet 255.255.255.0

Then We shared the internet from the External Adapter from the host machine to Internal Adapter.

After that, we created a Virtual machine and assigned the Internal vSwitch to that Virtual machine. Once we done all the configuration, Internet was working fine. But when we try to ran trace route from Virtual machine we are facing an issue,

1st hop having packet loss and it reach to the Default gateway (Internal Adapter IP)

2nd hop shows request timed out

3rd hop – its fine from this hop and it reach to the host IP address, from then on its usual traffic without timed out.

Below screenshot for your reference,

We would like to know, whether we have done the configuration in right manner, or it normal behavior in Hyper V.

Please let us the know, if any change is needed.

Note: If this is not a right channel to discuss this, kindly redirect to appropriate channel. Thank you

Best Regards,

Arun

I added my Hyper-V fail-over cluster to Windows Admin Center but when i go to Virtual machines i am only seeing VMs from 1 of the 2 hosts . 

Do i need to install the service on both hosts ?

Hello all...

Someone on the Hyper-V networking team might want to change this error message...…  I didn't bother looking, but I'm sure that I don't need to insert the disk into the drive and close the door.... :)

Status change (Nic Connected) sent to Nic 73108BFF-A1A3-4BE4-AF53-D6F747CC6D0D--5A0D679E-2EEC-45F8-BD4C-96401AA06818 (Friendly Name: xxxxxx.com) on port 97F21B97-4515-47C8-8105-844D82389416 (Friendly Name: fb4fb3d1-55eb-496d-a944-960671edb6fb) on switch D022A55E-B8ED-47E5-B311-099E886914E7 (Friendly Name: xxxxxxxxxxx). NicStatus: Nic Connected, Status: {Drive Not Ready}
The drive is not ready for use; its door may be open. Please check drive %hs and make sure that a disk is inserted and that the drive door is closed.