Windos Server 2019 – Hyper-V Machine random reboot – Kernel-Power 41

Good day, we have configured S2D cluster on Windows Server 2019 1809 (17763.1039) cluster successly pass tests via Test-Cluster and working with no problem, but if we moving virtual machive using live migration from other S2D cluster ( Windows Server 2016
). After migration, vm working some time ( random 1 - 8 hours ) and rebooting with errors. 


  0x00000109 (0xa39ff768722a4831, 0xb3b703eec4ab58f9, 0x00000002000001a0, 0x0000000000000007) 

after rebooting vm works correctly.

If stop vm on one cluster manually move files and start vm works correctly.

Read full post . . . .

Datacenter upgrade woes.

Hi all,


I am having a nightmare with a DC upgrade. We currently have a 2012 R2 Standard running hypervisor services. To get more out of the box we ordered a DC licence. I have access to the Microsoft licencing site and have got a copy of what I believe to be our
key but I cannot get the OS to accept this and upgrade to DC.


So - several questions…


Can I upgrade from standard to DC with the appropriate key? I did specifically ask for this when we went through the quote process and was informed that the keys we would be provided with will be suitable to do an upgrade without rebuilding our hpervisor.


The error I am getting is

Error: 0xC004F050 The Software Licensing Service reported that the product key is invalid


The key I am using is from the micorsoft site - the section is

“Windows  Server 2012 Datacenter”

I have used the KMS key and in the web site it does show our company name as the organisation so I guess that means we are all paid etc.


I did check in the KMS server and nothing seems to have been registered in there (not sure what I was expecting but it wasn’t nothing) As an extra bit of fun out network is largly behind a firewall with no internet access but I do know that the KMS server
is allowed thorough and this is working - last contact reported was only a few days ago.


So - can anyone point me in the direction of installing the key and getting this OS upgraded if

cscript c:windowssystem32slmgr.vbs -ipk xxxxx-xxxxx-xxxxx-xxxxx

is not going to work?


Thank you


Read full post . . . .

Daily Checklist – Hyper V Node 2012 r2


What is the recommended practice for Daily/Weekly checklist on the Hyper V 2012 r2.

Thank you!



Read full post . . . .

Hyper-V manager – black screens between Basic and Enhanced sessions

Hi all,

This seems like a common problem on the internet but I haven’t found a definitive solution anywhere.

Sometimes when booting up a Windows 10 VM, it will boot to a black screen in either a Basic or Enhanced session.

When I switch from the one to the other magically I can see that the VM has indeeded booted. The mere switching between the session types (Basic to Enhanced or vice versa) fixed the problem.

Obviously however it would be nice to not have to do this.

Does anyone know of the reason why this occurs and how to fix it once and for all? 🙂 

I am using the latest HyperV manager with the latest graphics drivers.


Read full post . . . .

hyperv 2012 R2 create cluster for new server and add host with vm to it


i’ve HV 2012 R2 with existsing VM’s on it that it is on a shared storage.

what are my options if i need to create a cluster for that host with the active VM’s on it?

can i create the cluster on the exists host and then add another host to the cluster or i need to create cluster from the second host and then add the first host?

what about the shared storage and the active vm’s do i need to turned them off when i add the host to the cluster?

what will happened to the shared storage on the main host when i add it to the CSV?(i can map the LUN to both server)


Read full post . . . .

VLANs in Hyper-V nested virtualization possible?


I have a little test environment using nested virtualization in Windows Server 2019 wehre I need to use VLANs.

The environment consists of:

- pHost > a physical server with Hyper-V role
- vHostSwitch > a private virtual switch on pHost

- vHost1 > a virtual server on pHost with Hyper-V role, connected to vHostSwitch
(mac spoofing & ExposeVirtualizationExtensions enabled)
- vmSwitch > an external virtual switch on vHost1 (shared with management os)

- vHost2 > a virtual server on pHost with Hyper-V role, connected to vHostSwitch 
(mac spoofing & ExposeVirtualizationExtensions enabled)

- vmSwitch > an external virtual switch on vHost2 (shared with management os)

- VM1A > a virtual Server on vHost1, connected to vmSwitch (on vHost1)

- VM1B > a virtual Server on vHost1, connected to vmSwitch (on vHost1)

- VM2A > a virtual Server on vHost2, connected to vmSwitch (on vHost2)

- VM2B > a virtual Server on vHost2, connected to vmSwitch (on vHost2)

So far, so good. All Servers can ping and reach each other without VLANs.

Also everthing is fine, when I configure a VLAN on the pHost by Setting the same VLAN ID in the Hyper-V network Cards for vHost1 and vHost2.
vHost1, vHost2, VM1A, VM1B, VM2A, VM2B can still ping each other, and as expected can’t ping VMs with different or no VLANs connected to vHostSwitch.

But what I need is setting up a VLAN for VM1A and VM2A, and a separate one for VM1B and VM2B.

As soon as i set VLANs in the Hyper-V network cards for those 4 VMs, the VMs on vHost1 cannot cummincate with VMs on vHost2 in the same VLAN.
This doesn’t change wether or not I’m using VLANS on the pHost for the vHosts.
VMs in the same VLAN within one vHost can communicate without a problem.

Also Setting a VLAN for the Management OS in vmSwitch on vHost1 and vmSwitch on vHost2 stops the vHosts from communicating with each other.

In a real Environment, vHost1 and vHost2 would be physical servers connected to a physical VLAN capable switch.
But in nested virtualization the vHostSwitch needs to play the role of the physical VLAN aware switch.
While Hyper-V switches definitely can handle VLANs, it seems they drop VLAN tagged packets comming from Hyper-V switches from within the nested virtualization.

So is there any way to make VLANs work between VMs between different nested Hyper-V hosts on the same physical Hyper-V host?

thanks in advance!

Read full post . . . .

Host and VM addressing on /30 network

I am trying to get my head around how host and VM addressing can work when using a /30 network.

The interface on the router is /30 (say  The VM needs to communicate with the router, and I don’t think NAT is an option, so seemingly the interface on the VM must be  This
leaves no spare addresses on the subnet.

This being the case, how do I address the physical interface on the HyperV host and configure the virtual switch(es) to allow transparent communication between the VM and the router?

Read full post . . . .

boot windows to go stick in hyper-v


I want to create a new Hyper-V virtual machine.

This "machine" should only use the windows 10 installed on my windows-to-go USB stick.

Is this possible?

Moin Hajo

Read full post . . . .

How to take image of current VM for future use?

I have installed Windows 10 Evaluation and necessary softwares. Now I would like to use this copy for future purpose once 90 evaluation done. 

Basically I want to make copy of it. 


ItsMeSri SP 2013 Foundation

Read full post . . . .

Virtual switch on network bridge

Good day,

I have network bridge made with 2 ethernet adapters on my Windows 2012r2 server.

Am I able to do virtual switch based on network bridge? Right now I can choose only single network adapter while switch creating :<

Read full post . . . .

Go Que Newsroom Categories

Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 40 bytes) in /home/content/36/8658336/html/goquecom/wp-includes/wp-db.php on line 1995