Can't snapshot Windows server 2022 VM

[geraud]

Hi,

I am trying to run a VM with Windows Server 2022 Standard on Proxmox 8.3.2. I followed the best practices provided here: Proxmox Windows 2022 Guest Best Practices.

I have installed the Guest Agent and services, and here is the hardware setup I’m using:


When I attempt to create a snapshot, the following error message appears:
"The current guest configuration does not support taking new snapshots."

Despite numerous attempts and thorough research, I am unable to resolve this issue. One notable detail is that if I create a VM with the same hardware setup but select "Linux" as the Guest OS Type, the snapshot feature becomes available and works correctly.

Could you please assist me in identifying and resolving the problem?

Thank you in advance for your help!

Best regards

 

[fiona]

Hi,
that is because the TPM state is in raw format on a directory storage. You would need to put it on a storage that supports snapshots.
https://pve.proxmox.com/pve-docs/chapter-pvesm.html
https://bugzilla.proxmox.com/show_bug.cgi?id=4693

 

[geraud]

Thank you for your clear answer. I finally found this information. I’ll do my best to adapt it to my current setup. Hopefully, the Proxmox team will release a patch soon!

 

[geraud]

Do you know if it would be an issue to install Windows Server 2022 with TPM disabled?

 

[fiona]

Do you know if it would be an issue to install Windows Server 2022 with TPM disabled?

I don't know with what versions/configurations exactly Windows forces you to use TPM. You could try, but I'm not Microsoft, so I can't give you any guarantees.