Students learning about operating systems, computer science, or software development might find it helpful to use older versions of Windows for educational purposes.
If you want to run in a Linux-based virtual machine (VM), a pre-built QCOW2 image saves you from a manual installation. Windows Vista Qcow2 Download
Follow the installation process. Once installed, you can remove the ISO and run Vista from the Qcow2 image. The Ultimate Guide to Windows Vista Qcow2 Download: