[HELP] Windows Server 2025 sysprep not working in Proxmox VE 8.2.7

SubliminaL1989

New Member
Feb 18, 2024
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Hello everyone,

I'm facing an issue when I try to run sysprep on a Windows Server 2025 VM in order to convert it to a template afterwards.
I've installed the virtio drivers, installed the windows updates, done a few tweaks and when I run sysprep with "OOBE experience" , "Generalize" and Shutdown option, the VM won't shutdown. I've manually shutdown the VM from PVE web interface, convert it to a template, but when I clone the template into a new VM, after setting up a new administrator password, the screen goes black and the VM becomes unresponsive.

I want to mention that I've encountered the same issue with sysprep on server core (no desktop), but after manually shutdown the VM and convert it to a template and then clone the template into a VM, everything is working as expected compared to the desktop experience version of the windows server.
I've also tried to replicate the issue in VMWare Workstation, but there is running the sysprep without any issue, the VM is shutting down properly after running sysprep, so I guess this is a Proxmox issue and not a Win Server issue...

Does anyone facing the same problem ?

Many thanks !
 
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