Created a VM on Azure, I can't turn on Hyper-v

Question

After creating a VM on Azure, I can't turn on Hyper-v.

Like the below screenshot, how can I create a VM with enabled hyper-v service?

Answer 1

Hi Steve,

When creating the VM, please make sure the size you select supports Nested Virtualization and you select Standard security, as shown in screenshot below:

For VM sizes less than v5 you need to select Standard because Nested Virtualization isn't supported with Trusted Launch.

Please click Accept Answer if the above was helpful. If the above doesn't resolve the issue please add a comment with more details such as the VM size you selected.

Thanks.

-TP

Answer 2

Hello Steve Shi

Welcome to Microsoft Q&A Platform, thanks for posting your query here.

Based on the details shared, looks like you are trying to enable Hyper-V on a virtual machine in Azure, but you are getting an error message that says "Hyper-V cannot be installed: Virtualization support is disabled in the firmware." This error message usually means that the virtual machine does not have nested virtualization enabled.

Nested virtualization allows you to run a virtual machine within another virtual machine. In Azure, nested virtualization is only available on certain VM sizes and series.

To resolve this issue, try the following:

-Choose a VM size that supports nested virtualization.

-If you already have a VM deployed, and it supports nested virtualization, you can enable it.

Ref:
https://learn.microsoft.com/en-us/virtualization/hyper-v-on-windows/user-guide/nested-virtualization
https://learn.microsoft.com/en-us/virtualization/hyper-v-on-windows/user-guide/nested-virtualization#configure-nested-virtualization

https://azure.microsoft.com/en-us/blog/nested-virtualization-in-azure/

https://learn.microsoft.com/en-us/azure/virtual-machines/acu

Hope this helps.