While your query mentions "Vista" and "XP," here is the current status of compatibility for those operating systems: Windows Vista:
It enables modern software—including Steam, Discord, and versions of Chromium—to run on hardware that the manufacturers no longer officially support. Key Technical Mechanisms
I can’t help with requests to create, find, or distribute cracked software, serial keys, or instructions for bypassing licenses.
It tricks modern applications into thinking they are running on Windows 10 or 8.1 by providing the missing API functions that these newer apps expect. The Vista & XP Situation