Hyper-V

Hyper-V is a native hypervisor; it can create virtual machines on x86-64 systems and supersedes Windows Virtual PC as the hardware virtualization component of the client editions of Windows NT. A server computer running Hyper-V can be configured to expose individual virtual machines to one or more networks. Hyper-V Server supports remote access via Remote Desktop Connection. Administration and configuration of the host OS and the guest virtual machines is generally done over the network.

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While I am connected to my organization's internal network using the Always on VPN connection (while outside of the office) I am able to successfully browse network shares on the Hyper-V base server and virtual servers using the \\hostname\C$ convention but can't browse these same network shares using the  \\internal IP address\C$ convention.

The internal IP address scheme used by my organization is uniqute and isn't widely used amoung other networks, 10.88.188.x (or by the networks I am connected to while establishing the Always On VPN connection).

I am also able to successfully browse these same C$ network shares while within my organization's internal network and connected using Wi-Fi or an Ethernet cable.

What can I do to fix this issue so I will be able to connect to and browse my organization's server's C$ shares using their IP addresses while outside of the office and connected to my organization's internal network using the Always On VPN connection?
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My Hyper V VM cannot get out to the internet. I setup a Hyper V lab with multiple server 2012\16 machines. I originally set them up on the private switch because I didnt think I would need the internet. I decided I needed it so I switch it to the external switch and they can still see each other but just not get out to the internet.

One of my VM's which I setup with the external switch when I installed it, still gets out to the internet. Just the ones im changing from a private switch to external wont work. Is there something I am missing?
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Windows 2012r2 Hyper-v with Windows 2012r2 Guest VM.
We have migrated our accounting application from a physical server to a virtual server.
The accounting software runs at a comparable speed on the virtual server as it did on the physical server.
However, client workstations running the accounting application from the virtual server are much slower.
Example times to run a customer report
   Run application report directly on the Physical server - 3 seconds
   Run application report on network workstation attached to physical server - 10 seconds

   Run application report directly on virtual server - 3 seconds    
   Run application report on network workstation attached to virtual server - 30 seconds

Disk, CPU, Memory and network utilization are all very low.
Can anyone advise a starting point for troubleshooting?

Many thanks in advance.
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Hi,
I have 2 servers 2016:
-A is the hyper-v host and also a DC
-B is virtual and is the DC, file server etc.

A frooze because of lack of memory but B continued working fine.

I shutdowned B today and then I closed A.

I rebooted A  and B started fine.

But when I try to do from A \\B\ it tells me \\B is not accessible. You might not have permission to use this network resource. Contact the administrator.....have access permissions. The target account name is incorrect.
I see in the A Events  id 4 error Microsoft-Windows-Security-Kerberos :
"The Kerberos client received a KRB_AP_ERR_MODIFIED error from the server ppdc16b$. The target name used was DNS/ppdc16b.pp.local. This indicates that the target server failed to decrypt the ticket provided by the client. This can occur when the target server principal name (SPN) is registered on an account other than the account the target service is using. Ensure that the target SPN is only registered on the account used by the server. This error can also happen if the target service account password is different than what is configured on the Kerberos Key Distribution Center for that target service. Ensure that the service on the server and the KDC are both configured to use the same password. If the server name is not fully qualified, and the target domain (PP.LOCAL) is different from the client domain (PP.LOCAL), check if there are identically named server accounts in these two domains, or use the fully-qualified name …
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Hyper-V Moved from failed Pc to a different PC.  There are multiple virtual disk segments .  I cannot figure out how to recombine them.
Hyper V folder looks like this.  
Test PC Office 2007.vhd                                                                                                                         8/22/18                                  41,000,000
Test PC Office 2007_9F3E5128-1505-47E9-829C-5BE2494F2518.vhd                                            9/27/17                                    3,300,000
Test PC Office 2007_275C1A16-FED6-41B3-8C97-568CA7A563D5.avhd                                       9/29/17                                    2,000,000    
Test PC Office 2007_5544EC0E-AAE8-4BDD-B107-1C753FA6BA48.avhd                                       8/22/18                                      336,000
TesTest PC Office 2007_F4403888-7F14-495F-8B77-1CCA88D284F8.avhd                                    8/6/18                                    7,000,000
Test PC Office 2007_F4403888-7F14-495F-8B77-1CCA88D284F8.avhd                                          9/29/17                                       20,000

The last time they used the hyper v session was 8/6/18 (before the cash)

After creating the vm and launching the VM all of the data in the database is from 9/27/19 or older.
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I am getting the following error message in the event log each time it's restarted.
This is a Windows 2016 Hyper-V Host.  There's no virtual machines on it yet, this is a brand new install:

Log Name:      System
Source:        Microsoft-Windows-Kernel-Boot
Date:          9/7/2018 7:48:33 AM
Event ID:      124
Task Category: None
Level:         Error
Keywords:      (70368744177664)
User:          SYSTEM
Computer:      HostName.Domain.com
Description:
The Virtualization Based Security enablement policy check at phase 0 failed with status: The object was not found.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-Kernel-Boot" Guid="{15CA44FF-4D7A-4BAA-BBA5-0998955E531E}" />
    <EventID>124</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8000400000000000</Keywords>
    <TimeCreated SystemTime="2018-09-07T12:48:33.163793600Z" />
    <EventRecordID>6108</EventRecordID>
    <Correlation />
    <Execution ProcessID="4" ThreadID="8" />
    <Channel>System</Channel>
    <Computer>hostname.domain.com</Computer>
    <Security UserID="S-1-5-18" />
  </System>
  <EventData>
    <Data Name="Phase">0</Data>
    <Data Name="Status">3221226021</Data>
  </EventData>
</Event>
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We have two identical Dell PowerEdge servers running WS2012 R2 set up as a cluster to a Dell PowerVault SAN.
There are 14 Hyper-V VMs occupying a little over 3TBs. As we are looking to expand the storage of the PowerVault,
I need a good backup solution for the VMs.

What is the most common and best way to backup these VMs?
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Hi i need to create a powershell script to check multiple hyper-v hosts for checkpoints over 24 hours old. could someone provide some assistance please.

so far i have Get-VMSnapshot but im not familiar enough with powershell to any more than this.
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Hello,
I have a FreeBSD Hyper-V vm I want to secure it so no one can use it on other server hardware or run until I do something for it.
so can I do that ?
thanks.
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I currently run a Windows Server 2012 R2 with the Hyper-V role installed. I have 3 guest VM's running Server 2012 R2. I have 3 network adapters teamed using NIC teaming but only one of the guest looses external network connectivity. I still can communicate between the guests but cant get outside the virtual switch. The only way to fix this is to remove a Nic from the NIC team and create a standalone virtual switch. After changing the guest vm to the new virtual switch it was working again just fine.
Unfortunately the same issue reappeared after about 2 weeks and the external access was no longer possible. As a workaround I created another virtual switch with the remaining NIC and it works again. This might be short lived unless i find a permanent solution. Can anybody shed some light on the issue
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I have a server 2012 Standard server with Hyperv running a virtual Server(Not a DC), and i want to move it to my new 2012 R2 Server. Can I just turn off the server and export it and then import it to the new server? I have read about live migrations as well but im not sure that is the method i want to use.
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I have a Hyper-V 2016 Host with a mix of Windows 2016, 2012R2 and 2008R2 guest VMs.  I use Veean 9.6 to back guests up.  Everything works fine.  I just built a new Windows 2016 VM with two virtual disks.  I cannot get this to back up.  From the Hyper-V console I cannot create a Production Checkpoint (which Veeam needs).  I get an error "Checkpoint operation failed.  Production checkpoints cannot be created".  Error 18012 and 18016 show up in the event logs.  I can create a standard checkpoint.  If I shut the VM down I CAN create a production checkpoint.  I've searched all over and I have not yet found any useful info on this.  What am I doing wrong?  TIA
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Just found only a couple of 2012R2 servers suddenly cannot access two particular network shared storage servers (two Data Domain storage) using \\hostname with the following error:

\\hostname is not accessible. you might not have permission to use this network resource. Contact the administrator of this server to find out if you have access permissions.
 This server's clock is not synchronized with the primary domain controller's clock.

Those servers are VMs among two Hyper-V hosts so they sync time with their hyper-V host. It's hard to believe if it is really a time related issue since all other 2012R2 servers on the same hyper-V hosts don't have this issue.
At the same time the couple of 2012R2 servers can access other network shared folders without a problem whereas other 2012R2 servers can access the two particular Data Domain storage servers without a problem.

The most strange thing is, if I use \\IP Address, I am able to access. It appears to be not a DNS issue since Ping -a hostname can result in its IP without a problem. Moreover, I did try putting the hostname and its IP in the hosts file, to no avail,

It seems like the issue coincides with some Windows update last month. The issue temporarily got fixed right after we installed all Windows update but the issue came back after 2 days. At this point, i'm kind of totally defeated. Can you help?
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Have a potential client with following setup:
3 Node Hyper-V failover cluster.
SCCM Server (Service not running and SCCM DB is offline)
SCOM Server (Service not running and SCOM DB is offline)
SCVMM Server (Service not running and SCOM DB is offline)
DPM - two DPM servers one replicates the other. DPM is online and backuping up the Failover cluster. No issues on DPM as far as I can tell.

As far as I can see SCCM, SCOM, VMM were never confgiured correctly - logs filled with various errors going back years. All these errors stopped one month ago however - reason is the previous IT admin turned off these services (Services stoped, databases not running).

Question - How will DPM react to the other System center services being offline for a month? Are the other System center components required for DPM to continue running correctly.
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I'm trying to configure a new server (dell), but keep going back and forth on the hard drive configuration. I'd like to get the best bang for my buck.
I'm trying to choose between:
1. (2) 10K SAS drives mirrored (RAID1)
2. (4) 7200 NL-SAS (RAID10)
3. (6) 7200 SATA (RAID 10)

It's just going to be a Hyper-V host for a DC, and file server for a small group (less than 40 users), if that matters. All three configurations are about the same price, a little more storage with the third. Any thoughts or suggestions please.
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I have a test server running 2012 R2 it's a clean installation  It's been upgraded to a domain controller and my clients can connect to it from their accounts in active directory from workstations.  I have the hyper-v role installed on the domain controller and I have created a virtual machine that I will install exchange 2013
[code]

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[/code] on.The problem is I can not get the exchange virtual machine to join the domain. This  is the error I receive:

Note: This information is intended for a network administrator.  If you are not your network's administrator, notify the administrator that you received this information, which has been recorded in the file C:\Windows\debug\dcdiag.txt.

The following error occurred when DNS was queried for the service location (SRV) resource record used to locate an Active Directory Domain Controller (AD DC) for domain "photonics.org":

The error was: "This operation returned because the timeout period expired."
(error code 0x000005B4 ERROR_TIMEOUT)

The query was for the SRV record for _ldap._tcp.dc._msdcs.photonics.org

The DNS servers used by this computer for name resolution are not responding. This computer is configured to use DNS servers with the following IP addresses:

192.168.5.7

Verify that this computer is connected to the network, that these are the correct DNS server IP addresses, and that at least one of the DNS servers is running.

The DNS server is running
The ipv4 settings on the exchange virtual …
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We are a small software company. We use hyper-v to host many servers both for testing our software and for providing customer facing services.

Right now, we have about 40 VMs spread over 5 hyper-v servers. Most VMs are testing machines and are not critical. However, we do have a few machines running Oracle Database and some web services.

Right now, we have the critical VMs on three physical hyper-v servers. These servers have a mix of HDDs and SSDs.

We are starting to hit the limit of internal storage on some of our servers and I have been tasked with finding a better solution.

I have been testing FreeNAS using iSCSI. I have also been thinking of changing our hypervisor from hyper-v to Xenserver (the open source version called xcp-ng). I am thinking about this change because of the replication options, central management of all the VMs as well as clustering and disaster recovery.

Our main concern is if we use FreeNAS to host all the VM storage and that FreeNAS server goes down, all our machines go down also.

I am aware that FreeNAS has a commercial counterpart called TrueNAS that has a HA option however even the basic models are out of our price range.

My main question is, what is the best way to get the most reliable and also fast storage for 5 to 6 hyper-v servers that can fail over in the event that one server goes down?
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I set up a server host OS and a VM in Hyper-V as a domain controller on a PC with a couple SSDs. When I got everything working, I cloned them over to a PowerEdge T330. Now my Hyper-V DC will not work with a static IP address. It cannot see the network PCs, ping out, or access the internet. If I set it to DHCP, I can access the internet, but nothing internal. I am at a loss as to why this is happening, however, I need to fix this as soon as possible. Does anyone have any ideas?
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Having issues with Hyper-V Cluster (Server 2016) where one of the cluster hosts is throwing an event id 5124 error, where it renames the shared cluster storage (locally to that server) each time the server is rebooted. I cannot migrate any VMs to that machine, but yet it still shows up as active in the failover cluster manager. I want to delete the old (renamed) storage folders to remove confusion but the server says I do not have access to do this (despite being a admin and domain admin).

Should I evict that failed machine from the cluster and rebuild it, or is there a fix for this so I don't have to do that?
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I have Hyper V  with below spplication and roles:
-windows server 2008 roles enabled.
-Active Directory Domain service.
-DNS and File Servers.

but once I try to connect the VM it is show an error, also once I try to press Sittings button it show me another error, please your support.

please your support to make the VM up and running.

error massage occur once Press-Connect-Buttompress-Sittings-button.jpgBR,
Saeed
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Hello all.
I am planning on deploying a Hyper-V host 2016 Datacenter with two or three large VMs.  One of which is going to be a general file server of about 15TB.

The best information I have been able to find regarding deduplication on these type of machines is this: https://docs.microsoft.com/en-us/windows-server/storage/data-deduplication/install-enable#enable-dedup; specially this section:

Workloads that might benefit from deduplication, but aren't always good candidates for deduplication. For example, the following workloads could work well with deduplication, but you should evaluate the benefits of deduplication first:
General purpose Hyper-V hosts
SQL servers
Line-of-business (LOB) servers


My questions: Should I enable deduplication at all?  If yes, should be at the Hyper-V host or at the VM level?

Thanks again!
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Dear All

I have a mikrotik CCR1036-12G-4S  router, I have built an IIS  VM on my host server I know that I need this to be in a DMZ but I am not sure how I can configuration this. Looking for some help with configuration.
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Hello there. In a couple of days we will be migrating a small business with a single 2012R2 Server/DC in VMware to a new server box hosting 2016 Standard, and we'll be creating a new HyperV DC using one of the licences that come with 2016 Standard Ed. I'm wondering about what specific settings I should use for creating a Hyper-V server that will function as everything (DC and all roles). To clarify, I'm not going to migrate the VMware VHD file to Hyper-V, but instead migrate the data over and create a new Hyper-V, as if they were both physical boxes.

So my questions are:
1. What are the ideal Hyper-V settings (generation 1 vs 2, secure boot, etc) for this server configuration?
2. Even though 2016 Stnd comes with 2 Hyper-V licences, will it let me create the Hyper-V without the installation media (or do I still need to download a 2016 Stnd ISO?
3. Anything else I should know as someone unfamiliar with hyper-V in general? I want the transition to be as smooth as possible.
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Have a client with 5 sites, each running on a 6KVA APC smart UPS
Each site is equipped with routing and switch gear, plus 2 powerfull Dell Rack mount servers.

I need to configure theses HyperV host and VMs to gracefully shutdown when UPS has about 40% battery run-time left
Then once power resumes, I need hosts and VM to auto start up again.  This has to work 100% as the site are on average 200-300KM apart and the furthest site is 600KM away from my office.

Please will someone send me the exact parameters to get this right. All UPSs has an SNMP card installed and the hosts already have to Power Chute client installed and configured, but I need to confirm if my config is 100%.  Please i need the best practiced way to do this as well could you advise if the UPS should also initiate a Self shutdown in the event that input power fails.  

UPS and Current Firmware is as follows:

Model: Smart-UPS RT 6000 XL
Position: RACK
Firmware Revision: 452.18.W
Manufacture Date: 10/04/12
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I have a 2-node Hyper-V cluster running Server 2012 on identical hardware with a FC-connected MPIO SAN, all of it IBM hardware- 2x 3650 M4's and a Storwize v3700. This has been working for about 5 or 6 years now without incident. Recently, one of the node stopped running VM's- the machines simply will not start up on this server. When I right-click the failed migration attempt and click "information details" I get a 0x80004005 error that says
"The migration failed at the destination. The processor settings for the virtual machine are not compatible with your physical computer 'HYPERVISOR2'. To migrate this virtual machine, you must first shut it down...."

Then it follows with instructions on how to transfer the machine to the other hypervisor that failed the first time. I have followed these steps, but given that the two hypervisors are identical, got the expected result: The same error message. I set the checkbox on the VM for processor compatibility mode, and got the same error. Doing a migration to the second hypervisor succeeded, but the VM gave me the same error when I tried to start it as well. I evicted the node from the cluster and added it back again (I can't use it because all the VM's have this problem anyway). I had run the Cluster validation wizard, and it had a few warnings, but they were for VM's that are powered off pending decommissioning. I did not make any changes to the configuration of either cluster member. All the networks match and work, and both …
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Hyper-V

Hyper-V is a native hypervisor; it can create virtual machines on x86-64 systems and supersedes Windows Virtual PC as the hardware virtualization component of the client editions of Windows NT. A server computer running Hyper-V can be configured to expose individual virtual machines to one or more networks. Hyper-V Server supports remote access via Remote Desktop Connection. Administration and configuration of the host OS and the guest virtual machines is generally done over the network.