Hyper-V and "Event ID: 157 – Disk x has been surprise removed"

After posting about Hyper-V and Event ID 58 the other week – I had a number of people ask me about Event ID 157.  They told me that each time they backed up a virtual machine they were seeing this event inside of the virtual machine as well. At first, I could not figure out… Read more

Finding a Virtual Machine Configuration File

Oh, how I do like a PowerShell challenge. The other day a colleague asked me this – “Ben, do you have a PowerShell snippet that I could give to a customer that tells them which virtual machine configuration file belongs to which virtual machine?” Now, if you have ever looked at your virtual machine configuration… Read more

Copying the VHD of a Generation 2 Linux VM–and not booting afterwards…

If you have installed Linux in a Generation 2 virtual machine – everything is probably working great for you!  You can even export the virtual machine and import it somewhere else.  However, things will not go well if you just shutdown the virtual machine and copy the virtual hard drive to a new location. If… Read more

Adding a second (and third) management OS adapter to a Virtual Switch

I was working on a Hyper-V server the other day – and decided that I wanted to connect it to a set of virtual machines that I had been working with.  Unfortunately, I had configured the virtual machines with multiple network interfaces on multiple separate subnets – and my host only had one physical network… Read more

Hyper-V and Wireless networking

  I have been getting a lot of questions about Hyper-V and wireless networking lately.  Specifically, these questions have been from people saying “why does it work sometimes, and not work other times”.  To give some background – wireless networking is quite tricky for virtualization.  To explain what we actually do here – let me… Read more

“The RPC server is unavailable” with Microsoft Virtual Machine Converter

When I first tried to perform a physical to virtual migration with the Microsoft Virtual Machine Converter 3.0 – I immediately hit this error message: After a bit of poking around, I was able to figure out the problem.  Microsoft Virtual Machine Converter use WMI, which is blocked on the Windows Firewall by default.  Once… Read more

Microsoft Virtual Machine Converter 3.0 Now Available

Yesterday we released the Microsoft Virtual Machine Converter 3.0.  You can download it here: http://www.microsoft.com/en-us/download/details.aspx?id=42497 It has a staggering amount of features.  Including the ability to convert physical computers to virtual machines and to convert VMware virtual machines to Hyper-V virtual machines online and offline. Cheers, Ben… Read more

Changing Ubuntu Screen Resolution in a Hyper-V VM

If you install Ubuntu 14.04 inside a Hyper-V virtual machine – you automatically get all the integration components and virtualized drivers.  Including the Hyper-V video driver.  However, if you try to change the screen resolution inside your virtual machine you will notice something odd: There is only one choice! Luckily, you can change the screen… Read more

“Error applying Hard Drive changes” on Generation 2 VMs

A Microsoft employee recently contacted us with this issue: “When I try and attach a virtual hard disk to a generation 2 virtual machine – I get an error message that says ‘Error applying Hard Drive changes’” It took a bit of conversation – but eventually we figured out what was happening.  Here is the… Read more

Importing a Virtual Machine with an Incompatible Saved State

This afternoon – an email arrived with the following question for me: “I’m working with on a Hyper-V migration with an import-vm component. I saw what I believe is your post on importing incompatible VMs. We are experiencing an issue where the incompatibility has to do with a bad saved state after the migration. This… Read more