Windows 11 has no legacy 32-bit support, but a 2005 Sun Workstation with an AMD Opteron processor can run it using a modified version called "Tiny11," which removes unnecessary components and the hardware compatibility checker. The specific version used by Sean from Action Retro is archived on Archive.org. Newer Windows 11 builds include the POPCNT operation, which the workstation's processor does not support. Additionally, Haiku is an alternative operating system that is ready for daily use.