Finding a pre-built Windows 11 QCOW2 image directly from Microsoft is not possible, as they primarily distribute Windows 11 ISOs . While some third-party sites like SourceForge list community-contributed images, the safest and most efficient "best of 2021" practice remains creating your own image from an official source to ensure security and performance. Install Win11 Dev VMware Image on the Proxmox Hypervisor
In 2021, the best performance flag for Windows 11 is: windows 11 qcow2 download best 2021
Any "Windows 11 QCOW2" file found online in 2021 was either: Finding a pre-built Windows 11 QCOW2 image directly
leaked in June 2021. While these are historical curiosities, they are not production-ready and pose significant security risks. For a stable 2021 experience (specifically version 21H2), the recommended path is using the Official Microsoft Windows 11 ISO Creating a High-Performance QCOW2 Image While these are historical curiosities, they are not
Without these, your QCOW2 will reboot into a "This PC can't run Windows 11" loop.