Virtualization

Items related to virtualization, with a focus on Microsoft Hyper-V

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Windows 10 Preview – VMs Missing In Hyper-V Manager

Posted on by Rhoderick Milne [MSFT]

After updating my Windows 8.1 machine to the Windows 10 preview, some of my VMs were no longer visible in the Hyper-V Manager.  Prior to powering on some VMs, all of them were visible.  After powering on, some VMs disappeared in the Hyper-V Manager console. 

In the screen shot below, there should be 10 VMs displayed which have the prefix of “HA”.

Honest Guv, There Really Are More VMs.....

Restarting the Virtual Machine manage… Read the rest “Windows 10 Preview – VMs Missing In Hyper-V Manager”

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Importing Server 2012 R2 Hyper-V VM Into Server 2012

Posted on by Rhoderick Milne [MSFT]

A virtual machine from Windows Server 2012 R2 cannot be directly imported into Windows Server 2012. This is discussed in this previous post along with the import error 32784 . 

There will be times when we want to take a 2012 R2 VM and import it into 2012, this happened to me recently when setting up one of the workshops that I deliver to customers.  While the setup guide said to deploy 2012 … Read the rest “Importing Server 2012 R2 Hyper-V VM Into Server 2012”

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Hyper-V Did Not Find Virtual Machines to Import – Error 32784

Posted on by Rhoderick Milne [MSFT]

When importing a VM into Windows Server 2012 that was exported from Windows 2012 R2 you will be unable to import the VM.  If you import the VM using PowerShell’s Import-VM cmdlet the error message is not very descriptive – “The operation cannot be performed because the object is not in a valid state”.  You will also find EventID 15040 in the VMMS event log. 

The operation cannot be performed because the object is not in a valid state

The full error message for … Read the rest “Hyper-V Did Not Find Virtual Machines to Import – Error 32784”

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VMware Issues With Exchange DAG

Posted on by Rhoderick Milne [MSFT]

When resolving issues with on-premises Exchange sometimes the issue may be directly within Exchange, other times the root cause may lie outside Exchange.  Depending upon the exact nature of the case we may have to investigate network switches, load balancers or storage.  When Exchange is virtualized then the hypervisor and it’s configuration also may require attention.

This was the case with a rece… Read the rest “VMware Issues With Exchange DAG”

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Retrieving Packets Received Discarded Perfmon Counter From Multiple Servers

Posted on by Rhoderick Milne [MSFT]

Whilst working on a customer’s Exchange 2010 DAG issue, I wrote a quick script to quickly grab some performance monitor counters from all of their Exchange servers.  The issue that we were investigating was related to discarded packets when the VM was running on a certain hypervisor host.  The customer had moved their Exchange VMs to a new host and after doing so they were experiencing cluster iss… Read the rest “Retrieving Packets Received Discarded Perfmon Counter From Multiple Servers”

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Hyper-V Could Not Initialize – Could Not Create or Access Saved State File

Posted on by Rhoderick Milne [MSFT]

As part of my relaxing holiday, I spent a fair bit of time upgrading the hardware in my lab and installing Windows Server 2012 R2 onto all of my Hyper-V hosts.  I then went through and pruned out some old test VMs and made sure the ones I had left were still relevant.

After I did the upgrade to 2012 R2 and powered on some machines that had been dormant for a few months, actually quite a few months … Read the rest “Hyper-V Could Not Initialize – Could Not Create or Access Saved State File”

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Hyper-V Encountered An Error While Loading The Virtual Machine

Posted on by Rhoderick Milne [MSFT]

When I was running Windows 8 I ran into an issue importing VMs with the error “Did Not Find Virtual Machine To Import” and discussed it on the blog.   The presence on the .exp file was causing the import to fail.  Since I had to rebuild my corporate laptop, I hit a related the same thing in Windows 8.1 but with a different error message.

Importing the same set of lab VMs to Windows 8.1 gave me a di… Read the rest “Hyper-V Encountered An Error While Loading The Virtual Machine”

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How To Import Windows 2008 R2 VM To Windows 2012 or 8.1 Using Boot To VHD

Posted on by Rhoderick Milne [MSFT]

One of the popular topics lately has revolved around the Hyper-V Did Not Find Virtual Machines To Import error.  This issue can arise when we try and import a VM into Windows Server 2012 R2 or 8.1 which was originally exported from Windows Server 2008 or 2008 R2.  Such exported VMs from 2008 or 2008 R2 use a .exp file to hold the exported VM's configuration.  The issue is discussed in detail in the… Read the rest “How To Import Windows 2008 R2 VM To Windows 2012 or 8.1 Using Boot To VHD”

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Windows Server 2012 R2 Hyper-V Architecture Poster

Posted on by Rhoderick Milne [MSFT]

A picture says a thousand words.   This is one of the reasons that the various architecture posters are so popular as they provide an easy way to visualise the Hyper-V stack.

Updated posters are now available for Windows Server 2012 R2 Hyper-V.  In addition to the architecture poster, there are other smaller bite sized posters on the below topics:

  • Generation 2 Virtual Machines
  • Hyper-V and Failover Clus
… Read the rest “Windows Server 2012 R2 Hyper-V Architecture Poster”
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Windows Hyper-V 2012 & 8.1 Hyper-V Did Not Find Virtual Machine to Import

Posted on by Rhoderick Milne [MSFT]

Back in May 2013, we discussed an issue which caused the Hyper-V Did Not Find Virtual Machines To Import error.  Well, as mentioned in that blog post there are a few reasons for this error message being displayed and it does depend on the versions of Hyper-V in use.

There were some comments posted (thanks again for that by the way!) which mentioned an issue with importing VMs into Windows Server 201… Read the rest “Windows Hyper-V 2012 & 8.1 Hyper-V Did Not Find Virtual Machine to Import”