Vienna, Austria – November 19, 2025 – Proxmox Server Solutions GmbH (henceforth “Proxmox”), the leading open-source server solutions provider, today announced the immediate availability of Proxmox Virtual Environment 9.1. The new version introduces significant enhancements to container deployment, virtual machine security and software-defined networking, providing businesses greater flexibility, performance and operational control.
Highlights in Proxmox Virtual Environment 9.1
Create LXC container 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 manually upload them 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 unique and customized approach that ensures minimal footprint and better resource utilization for microservices. This new functionality means administrators can now quickly and seamlessly deploy standardized applications (for example, a specific database or API service) from existing container build pipelines via the Proxmox VE GUI or command line.
Support for TPM status in qcow2 format
This version introduces the ability to store the state of the Virtual Trusted Platform Module (vTPM) in the qcow2 disk image format. It allows users to perform full VM snapshots even with active VTPM across different storage types like NFS/CIFS. LVM storage 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 VTPM.
Fine-grained control of nested virtualization
Proxmox VE now provides advanced controls for nested virtualization in specialized VMs. This feature is especially useful for workloads such as Windows environments with nested hypervisors or virtualization-based security (VBS). A new vCPU flag allows to easily and precisely enable virtualization extensions for nested virtualization. This flexible option gives IT administrators more control and provides a customized option to expose the full host CPU type to the guest.
Advanced SDN Status Reporting
Version 9.1 comes with an improved software-defined networking (SDN) stack, including detailed monitoring and reporting in the web interface. The GUI now provides greater visibility into the SDN stack, displaying all guests connected to local bridges or VNets. EVPN zones additionally report learned IP and MAC addresses. Fabrics are integrated into a resource tree, showing routes, neighbors and interfaces. The updated GUI provides visibility into key network components such as IP-VRF and MAC-VRF. This increased observability simplifies cluster-wide network troubleshooting and monitoring of complex network topologies, without the need for the command line.
Availability
Proxmox Virtual Environment 9.1 is available for immediate download. Users can obtain a complete installation image via ISO download, which includes the full feature-set of the solution and can be quickly installed on bare-metal systems using an intuitive installation wizard.
Seamless delivery upgrades from older versions of the Proxmox Virtual Environment are possible using the standard APT package management system. Furthermore, it is also possible to install the Proxmox Virtual Environment on top of an existing Debian installation. The entire solution is published under the GNU AGPLv3, as free/libre and open source software (FLOSS).
For enterprise users, Proxmox Server Solutions GmbH offers professional support through subscription plans. The price of these subscriptions starts at EUR 115 per year plus CPU. A subscription provides access to a stable enterprise repository with timely updates via web interface as well as certified technical support and is recommended for production use.
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The open-source project Proxmox VE has a huge user base with over 1.6 million hosts worldwide. The virtualization platform has been translated into more than 31 languages. Over 225,000 active community members connect and help each other in the support forum. By using Proxmox VE as an alternative to proprietary virtualization management solutions, enterprises are able to centralize and modernize their IT infrastructure, and transform it into a cost-effective and flexible software-defined data center based on the latest open-source technologies. Thousands of customers rely on enterprise support subscriptions from Proxmox Server Solutions GmbH.
About Proxmox Server Solutions
Proxmox offers powerful and user-friendly open-source server software. Enterprises of all sizes and industries use Proxmox solutions to deploy efficient and simplified IT infrastructure, reduce total cost of ownership, and avoid vendor lock-in. Proxmox also provides business support, training services and an extensive partner ecosystem to ensure business continuity for its customers. Proxmox Server Solutions GmbH was founded in 2005 and is headquartered in Vienna, Austria.
Contact: Daniela Hassler, Proxmox Server Solutions GmbH, marketing@proxmox.com