Windows 11 22H2 Breaks virtual switches in Hyper-V #windows11 #fix #break #hyperv #vswitch  #WindowsInsiders

Windows 11 22H2 Breaks virtual switches in Hyper-V

After updating to Windows 11 22H2 all my VM's did not work any more. 's where in save state and could not start anymore. There is just an easy fix and don't panic your 's will run as normal with the setting change.

First the integration services need to be upgraded, in my case I had vm's from server 2012 etc but these needs to be upgraded, so far my test lab.

The error was upgrade the configuration version.

as you can see I have several versions, more about these configuration version can be found here

Upgrading the configuration version can be done in the gui easy if you have just a few vm's or in powershell per vm or all at once.

First lets see the version in powershell ( must run as administrator)

get-vm wvd-w10 |select version

Update-VMVersion -Name “wvd-w10” -force

get-vm wvd-w10 |select version

Update-VMVersion * -force

With these command I updated all vm's , all are now version 11.0

With this the VM will start, but there was no connection so there must be an issue with the switch.

I noticed there was a default switch, Not sure if I created this in the past but I could not delete this switch, looking at the extensions of the vswitch all filter settings where tagged and that is also the issue.

UNTAG the Filters and the connection is there Make sure you stop start the VM!

see here the two filters that are checked un check these two and apply and stop start the vm and it is all back to normal.

Annoying yes, but it is fixable and easy to fix, and I could blame my self for this as an Windows internal MVP, I did test the update but not in this scenario or to late I was a couple of builds behind.

Hope this post will help you fixing this issue quickly

Hope it was helpful thanks for visiting my blog.

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Author: Robert Smit [MVP]

Robert Smit is Senior Technical Evangelist and is a current Microsoft MVP in Clustering as of 2009.
Robert has over 20 years experience in IT with experience in the educational, health-care and finance industries.
Robert's past IT experience in the trenches of IT gives him the knowledge and insight that allows him to communicate effectively with IT professionals
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This article was originally published by The Windows Server HA Blog. You can find the original article here.