You do not need to install any software. You simply need the correct URL.
There are several JavaScript emulators designed specifically to host XP in a browser for running legacy apps. 2. Traditional Emulation & Virtualization pcjs windows xp work
As of April 2026, on the standard PCjs platform because the project is primarily designed to emulate 1970s and 1980s hardware, such as the original IBM PC, XT, and AT . Emulator Limitations You do not need to install any software