Virtualization is the act of creating a virtual (rather than actual) version of something, including (but not limited to) a virtual computer hardware platform, operating system (OS), storage device, or computer network resources. Virtualization is usually the creation of a system that executes separate from the underlying hardware resources, or the creation of an entire desktop for systems located elsewhere, similar to thin clients.

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Hello all,

I cannot make a Hyper-V backup because the backup software does not see Hyper-V / VM's. That is because when I do a : "vssadmin list writers" the Hyper-V writer is missing.

Anyone know how to resolve that?
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Dear All

              i recently have a probem on veeam (backp to tape) although i changed to use a brand now backup tape, this problem still occur, may i know this is reated to hardware or veeam software itself ? any help would be appreicated,

Hyper V wont read .iso to install an OS on a VM.
I have a Hyper V server  with 3 guests.
The host only has one partition so hyper v is running on the local C: drive.

I'm going to do a one time backup just for disaster recovery purposes. In case the whole server goes.
Would it be beneficial to do a one time backup of the whole host using windows backup?
And then I could restore the virtual machines using image restore to the VM.

This customer uses Datto Backup for the guest servers.
Hi All
I am in the process of deploying exchange 2013. I have used your videos to learn about exchange 2013.

I have a vm environment in which i have 2 2012 DC's and 2 exchange servers. one is 2010 and the other is 2013.

My challenge is that i am unable to connect via outlook on exchange server 2013 itself. It first said there is no default gateway so i followed experts exchange suggestion to change registry which didnt help.

When i try to configure outlook Auto account setup is able to find my username with email address. After this i click next and i get a security certficate error indicating the name on the security certificate is invalid or does not match the name of the site. i click yes to proceed. After this it gives me the following

"The action cannot be completed. The connection to Microsoft Exchange is unavailable. Outlook must be online or connected to complete this action"

If i click ok, i get a sid like number clicking ok results in logon to server with a cross sign. thus i am unable to proceed any further

Requesting assistance on this please. Thanks in advance for your assistance.

The suggestion from expert exchange was as follows
Click Start, click Run, type regedit in the Open box, and then click OK.
Locate and then click the following subkey:
On the Edit menu, point to New, and then click DWORD Value.
Type DefConnectOpts, and then press ENTER.
Veeam backup fails to create a snapshot due to error: Failed to create snapshot: Backup job failed. Cannot create a shadow copy of the volumes containing writer's data. A VSS critical writer has failed. Writer name: [NTDS]. Class ID: [{b2014c9e-8711-4c5c-a5a9-3cf384484757}]. Instance ID: [{e8796d4d-5afe-446a-9648-f0fb208162c1}]. Writer's state: [VSS_WS_FAILED_AT_FREEZE]. Error code: [0x800423f2].

Writers are all stable and have no errors
Server has been rebooted and dlls have been re-registered

Disk shadow verify command shows this result:

-> set verbose on
-> set context volatile
-> add volume C:
-> add volume \\?\Volume{53357368-6671-426e-9410-8289db3d0c8f}\
-> writer verify {d61d61c8-d73a-4eee-8cdd-f6f9786b7124}
-> writer verify {75dfb225-e2e4-4d39-9ac9-ffaff65ddf06}
-> writer verify {0bada1de-01a9-4625-8278-69e735f39dd2}
-> writer verify {e8132975-6f93-4464-a53e-1050253ae220}
-> writer verify {be000cbe-11fe-4426-9c58-531aa6355fc4}
-> writer verify {8d5194e1-e455-434a-b2e5-51296cce67df}
-> writer verify {2a40fd15-dfca-4aa8-a654-1f8c654603f6}
-> writer verify {6f5b15b5-da24-4d88-b737-63063e3a1f86}
-> writer verify {2707761b-2324-473d-88eb-eb007a359533}
-> writer verify {12ce4370-5bb7-4c58-a76a-e5d5097e3674}
-> writer verify {4dc3bdd4-ab48-4d07-adb0-3bee2926fd7f}
-> writer verify {368753ec-572e-4fc7-b4b9-ccd9bdc624cb}
-> writer verify {afbab4a2-367d-4d15-a586-71dbb18f8485}
-> writer verify {542da469-d3e1-473c-9f4f-7847f01fc64f}
-> writer verify …
When I restart the Server 2016 Hyper-V base server (which has 5 Server 2016 virtual servers running) the virtual servers all have the "Shut Down event tracker" notification window that displays once the base server boots back up and I connect to these virtual servers.

Does this mean that the virtual servers aren't being shut down or restarting properly?

Shutdown event tracker
Veeam not connect to Vcenter - connection is being actively refused - portqry says 443 is not listening on Vcenter but netstat shows that 443 is listening
Hi everyone
I need advice from the VMware expert Regarding the VSP will I get it ? As I understand I need to pass VSA exam then enroll on one of the authorization training center after I completely the training I will be able to take the exam of VSP ...but as you know the training of VMware in school it cost a lots price .I hear about the online class training provided by authorization school from VMware can any one help me to understand more about it

We have a Windows 2012 R2 domain controller Hyper V running on a Windows 2012 R2 server. We are getting speeds of 45mbps up & down but they Hyper V is barely reaching 8mbps.

The Hyper V has 2 processors & 16GB RAM so really more than enough for it. I have turned off VMQ's on the Hyper V (as per a quick google search) & this increased the speed a little but not very much.

Any ideas on what I am missing?
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I have recently installed an Ubuntu 16.04 VHD image. Initially the /etc/network/interface file was empty. I put in the ip address info that I was provided by our network guy.
ifconfig showed eth0 as the interface name.
I edited the interface file to have the following:
auto eth0
iface eth0 inet static
dns-nameservers .....

the network folks changed their minds and wanted to put my server on a different subnet.
I have edited the interface file.
auto eth0
iface eth0 inet static
I have flushed the interface.
I have tried rebooting and actually shutting down the system.

but each time when I boot back up the interface continues to be configured with the old IP.

what am I doing wrong?
What do I need to do in order for the new IP to be loaded into the configuration?

Thanks in advance.

The problem is because the domain controller (AD) always require to perform a soft restart to temporary resolve taking up a lot of pages files (swap files) as to the slowdown the system.

My boss wanted me to recreate a new VM, install OS, dcpromo and transfer all roles & permission. But, there are a lot of applications / Services require this AD to be authenticated so I purpose to a investigation to the server. I've found the issue maybe due to SCCM agent so I uninstall it and monitor for a week and no more slowness at this point of time.

Can anyone help and advice is there any tool script to check HQAD Server health to report back either html or xml so that i can present it to my boss?  


I'm using a script (quite a while) in which via Powercli, I get the OSFullName   of a VM .
That's empty now in recent vm's (Windows 10)?! Any idea why/what workaround?

A client of mine wants the Direct Access role to be installed within a Server 2016 Hyper-V virtual machine.

I have already found instructions for setting up Direct Access but these guides don't include any instructions on how to set up the Hyper-V networking to support installing Direct Access within a Server 2016 Hyper-V virtual machine.

Please provide me with the instructions for installing Direct Access including setting up the Hyper-V virtual machine networking that is necessary for installing Direct Access within a Hyper-V virtual machine.

Direct Access will be installed on a server that has 4 physical RJ network ports.
How do I deploy an App Volume environment from the beginning. I know the VDI environment will be a considering factor.  What factors should I consider?  Is Horizon View required within the infrastructure for a simple App Volume deployment?   What are the components required to package applications? For example: provisioning VM, Writable Volumes, App Volume Server? How do I create the Golden VM image and why?.



I'm new to the network support scene but I want to know more so I've got myself a little lab environment to do some home learning with. One thing that I want to know how to do is setup a site-to-site VPN between two pfSense devices using OpenVPN.

I have a hosted network that uses a VM running pfSense as a gateway. The network has a domain (lab.local) and a DHCP/DNS (LAB-S01 / I have a virtual server that uses a VM ( running as a gateway but this is running on my own machine.

Following the video the two sites can ping the tunnel network ( but neither end (home or hosted) can ping the other machines.

I have setup a VPN so my personal laptop can reach the hosted pfsense machine and that works as expected, that reaches the 192.168.1.X LAN. I don't understand why the site-to-site isnt working.

I've looked online but can't find anything that solves the issue.

Hopefully I've missed something obvious, but any help would be greatly appreciated.

I've already setup the firewalls to allow all traffic across all ports - that made no change.
I've re-created the server and client connections - that made no change
I've checked all the settings and everything lines up with what I've been told to do.

Other than the Open VPN S2S and user VPN, i've not made any changes to the OpenVPN other than assigning the WAN and LAN addresses at startup.

What needs to be done to allow the …
Unable to check free disk space on Azure VM Powershell

PS C:\temp> get-WmiObject win32_logicaldisk -Computername XX.XX.XX.XX | Format-Table DeviceId, MediaType, @{n="Size";e={[math]::Round($_.Size/1GB,2)}},@{n="FreeSpace";e={[math]::Round($_.FreeSpace/1GB,2)}}
get-WmiObject : The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)
At line:1 char:1
+ get-WmiObject win32_logicaldisk -Computername | Format-Tabl ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [Get-WmiObject], COMException
    + FullyQualifiedErrorId : GetWMICOMException,Microsoft.PowerShell.Commands.GetWmiObjectCommand
Windows 2012 R2 Hyper-V host. It was running one VM for 2 years with no problems.

Added another VM and the new guest (PaperCut site server) starts to crash and eventually brings down the host. Pretty random. Can last a week or a day.

Performance shows plenty of hard drive space, RAM and no excessive CPU usage.

A reboot doesn't work. Only a forced shutdown.

Where is the best place start looking? Event Viewer.. Log files etc.

Any help would be greatly appreciated.
Morning, I have a certification authority that was originally server 2003 and was migrated to server 2012 standard. Certificates issued are still SHA-1 and I need to upgrade this to SHA256 or SHA512. I ran through the steps in the link below but after running through "Mine Won't change From SHA1?" I get Active Directory Certificate Services did not start: Could not load or verify the current CA certificate.  gibexchange Keyset does not exist 0x80090016 (-2146893802).

I then restored from backup and all is working again but just on SHA-1

I have the option of setting up a new 2016 data center VM and migrating over to that if it would help?
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This course will teach participants about installing and configuring Python, syntax, importing, statements, types, strings, booleans, files, lists, tuples, comprehensions, functions, and classes.

Windows 2012 R2 Hyper V. NIC in promiscuous mode. Allocated to CentOS VM. (Have also tried Ubuntu)

Only some of the traffic is being picked up by Wireshark on the VM. I am monitoring SIP traffic from my PBX. I can see traffic from the PBX, but none of the return traffic.

If I run Wireshark directly on the Hyper V host, I can see traffic in both directions. Its only when directed to the VM that I don't see the one direction. To me this rules out my port mirror, the switch, the NIC,. I also don't believe it is CentOS because the Ubuntu VM has the same issue.

I used this process to configure the Virtual Switch and NIC to allow the mirroring.
Installed Server 2012 vm.  been up up about 3 weeks. when i right click on anything, explorer decides to hang for 10-15 minutes "Not Responding"  Any ideas.  would like to not have to reinstall the server.
Guests doesn't migrate after dead host in Vmware cluster. Version 5.5. The vm's says disconnected, and it isn't a choice to migrate, (greyed out). Migration has worked earlier.
I'm new to VirtualBox and getting a critical error starting a Windows 2000 Server VM.   I would like to know what options I have to debug it as I really don't know where to start.

The VIM was created from a Windows 2000 Server system clone using Clonezilla followed by Sysinternals Disk2Vhd from the clone.  

The original server was The Clone and VHD occurred without error, so I assume it's something with how I set it up in Virtualbox. I've attached the logs by the last run.

The server was a RAID 5  with 3 GB of memory.    3 GB of memory was provided to the VM.

If I know where to start...

Thanks lots for your insights.
I migrated VM from vCloud Director to vRA 7.3 after migration I powered off VM but when I tried to Power ON VM it shows error
" A general system error occurred:The virtual machine requiresthe/system.service.vmware.vsla.staging" which is not available on host

I have 2 physical servers which I have converted to VHDX files using Microsoft's P2VHD.

I have saved the VHDX files directly onto a Synology RackStation. When I have come to create a new Hyper V using these VHDX files I get the following error -

The Virtual Machine Management Service encountered an error while configuring the hard disk on virtual machine Termserver

Failed to add device "Virtual Hard Disk"

The machine account *****\RDPHV$ or the user initiating the VM management operation or both do not have the required access to the file share "\\NAS\VMs\VHD\Termserver.VHDX. Please ensure that the computer machine account and the user initiating the VM management operation have full access to the file share as well as the file system folder backing the file share. Error: 'General access denied error'

I am logged into the Hyper v server as Domain admin & the Domain admin has full control of the NAS Shares.

I have googled the issue and it looks like its because the VHDX files are missing the SID needed for Hyper V to access them. I am a little stuck on how to find the SID & how to add this to the VHDX file.






Virtualization is the act of creating a virtual (rather than actual) version of something, including (but not limited to) a virtual computer hardware platform, operating system (OS), storage device, or computer network resources. Virtualization is usually the creation of a system that executes separate from the underlying hardware resources, or the creation of an entire desktop for systems located elsewhere, similar to thin clients.