Fixing The trust relationship between this computer and the primary domain failed Error when restoring a Snapshot or Old Virtual Machine

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"

Hyper-V Virtual Machine stops responding to network traffic if VMQ (Virtual Machine Queues) are enabled on a 1GB physical NIC

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"

An error occurred while attempting to start the selected virtual machine(s) The security ID structure is invalid (0x80070539)

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)"

Checking the performance of your Windows Server 2012 Hyper-V Server with Performance Monitor and PAL

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"