Proxmox Virtual Environment 9.1 available
VIENNA, Austria – November 19, 2025 – Leading open-source server solutions provider Proxmox Server Solutions GmbH (henceforth "Proxmox"), today announced the immediate availability of Proxmox Virtual Environment 9.1. The new version introduces significant enhancements across container deployment, virtual machine security, and software-defined networking, offering businesses greater flexibility, performance, and operational control.
Highlights in Proxmox Virtual Environment 9.1
Create LXC containers from OCI images
Proxmox VE 9.1 integrates support for Open Container Initiative (OCI) images, a standard format for container distribution. Users can now download widely-adopted OCI images directly from registries or upload them manually to use as templates for LXC containers. Depending on the image, these containers are provisioned as full system containers or lean application containers. Application containers are a distinct and optimized approach that ensures minimal footprint and better resource utilization for microservices. This new functionality means administrators can now deploy standardized applications (e.g., a specific database or API service) from existing container build pipelines quickly and seamlessly through the Proxmox VE GUI or command line.
Support for TPM state in qcow2 format
This version introduces the ability to store the state of a virtual Trusted Platform Module (vTPM) in the qcow2 disk image format. This allows users to perform full VM snapshots, even with an active vTPM, across diverse storage types like NFS/CIFS. LVM storages with snapshots as volume chains now support taking offline snapshots of VMs with vTPM states. This advancement improves operational agility for security-sensitive workloads, such as Windows deployments that require a vTPM.
Fine-grained control of nested virtualization
Proxmox VE now offers enhanced control for nested virtualization in specialized VMs. This feature is especially useful for workloads such as nested hypervisors or Windows environments with Virtualization-based Security (VBS). A new vCPU flag allows to conveniently and precisely enable virtualization extensions for nested virtualization. This flexible option gives IT administrators more control and offers an optimized alternative to simply exposing the full host CPU type to the guest.
Enhanced SDN status reporting
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