I had a VM snapshot/checkpoint running for several months in my test lab and after reverting the snapshot back I went to login to the machine and got the dreaded Trust relationship between this computer and the primary domain failed error message. So I logged in as a local admin onto that machine, opened up … Continue reading "Fixing The trust relationship between this computer and the primary domain failed Error when restoring a Snapshot or Old Virtual Machine"
I recently took on a new customer who’s IT infrastructure was a mess. They have good hardware but the setup they had was just awful (it was an internal guy who had great ideas but little skill). They had Hyper-V running on a nice new Gen9 HP Server on Windows Server 2012 R2, which is … Continue reading "Hyper-V Virtual Machine stops responding to network traffic if VMQ (Virtual Machine Queues) are enabled on a 1GB physical NIC"
So I was recently working with some really old Virtual machines in a development environment that came across from another organisation. One particular virtual machine gave me an error message when I tried to start it up “An error occurred while attempting to start the selected virtual machine(s)… The security ID structure is invalid (0x80070539)”. When this happens, … Continue reading "An error occurred while attempting to start the selected virtual machine(s) The security ID structure is invalid (0x80070539)"
Windows Server 2012 brings some great improvements to Virtualization. We’re currently running it in production and it works wonders, especially with the new Hyper-V Replica feature which is great and free way of implementing DR. So now you’ve got that cluster running, how can we tell if it is performing well. I recently stumbled upon PAL … Continue reading "Checking the performance of your Windows Server 2012 Hyper-V Server with Performance Monitor and PAL"
I’ve been reading a lot lately about what people have been saying about Microsoft’s latest go at a hypervisor and many say that now with Hyper-V 2012, Microsoft is catching up to VMware in the enterprise virtualization arena (one example from ZDnet). So what is all the fuss about…really. I’ll identify some of the key … Continue reading "What is new with Hyper-V in Windows Server 2012"