Microsoft used to provide free "IE11 on Win7" VMs for developers. While the official download pages are often redirected, many tech archives still host these .ova files. You can import these into Proxmox or convert them directly to QCOW2. 3. Community Repositories (GNS3 & EVE-NG)
The QCOW2 (QEMU Copy-On-Write) format is the gold standard for KVM and Proxmox environments. Unlike raw disk images, QCOW2 offers: windows 7 qcow2 top
Ensure the disk cache mode is set to "Writeback" in your KVM settings and that you are using the virtio-scsi controller rather than the default IDE. Microsoft used to provide free "IE11 on Win7"