A direct Windows 11 QCOW2 download is not officially provided by Microsoft, as they primarily distribute virtual machines in OVA, VDI, and VHDX formats for Enterprise evaluation. To get a high-quality (or "extra quality") QCOW2 image for environments like KVM, Proxmox, or QEMU, the standard approach is to create one manually or convert an official evaluation image. Official Windows 11 VM Sources

For the highest reliability, it is recommended to create your own image from an official ISO, though some reputable cloud-ready alternatives exist:

Step 2: Setup the VM with Correct Settings

Do not use default BIOS settings. For extra quality, you must use:

Where to Find Ready-Made “Extra Quality” Images (Proceed with Care)

If you absolutely need a pre-made QCOW2, look for these markers of quality:

Verify and secure: