Forum Discussion

MCT

Nov 16, 2022

Solved

Windows 11 Multisession AVD - problem upgrade to 22H2

Hello, I have a problem updating the VM used for my Azure Virtual Desktops; When I update I get the following error: The VM generator is 2.0

micheleariis
Jul 31, 2024
I close the post with the solution provided by Microsoft.

https://learn.microsoft.com/en-us/azure/virtual-machines/trusted-launch-existing-vm?tabs=portal

askaresh

Iron Contributor

Nov 17, 2022

I hope you had enabled TPM on your virtual machine? If not, please make sure its enabled as TPM 2.0 is a requirement for the Windows 11 Upgrade.

micheleariis

MCT

Nov 17, 2022

askaresh

I tried to activate it by running the following commands

az vm update \
--resource-group \
--name \
--enable-secure-boot true \
--enable-vtpm true

but I get the following error back

(PropertyChangeNotAllowed) Changing property 'securityProfile.uefiSettings' is not allowed.
Code: PropertyChangeNotAllowed
Message: Changing property 'securityProfile.uefiSettings' is not allowed.
Target: securityProfile.uefiSettings

askaresh
Iron Contributor
Nov 17, 2022
Make sure the virtual machine is Gen2 and last when i checked there were some limitations on Multi Session (Feature was under preview)

https://learn.microsoft.com/en-us/azure/virtual-machines/generation-2 (jump to the FAQ)
- micheleariis
  MCT
  Nov 17, 2022
  askaresh
  The VM is Standard D2s v3 (2 vcpus, 8 GiB memory)
  - askaresh
    Iron Contributor
    Nov 18, 2022
    micheleariis Found this on the doco you cannot enable trusted launch on an existing virtual machine
    
    As a test deployed Standard D2s v3 and tried changing in the UI no option under Configurations and with PowerShell it gave an error.