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Relive the Blast from the Past: Running Windows XP in Your Browser with PCjs
PCjs (PC JavaScript) is an open-source project created by Jeff Parsons. It emulates legacy IBM PC hardware entirely in client-side JavaScript. Unlike modern VMs (VirtualBox, VMware), PCjs requires no plugins, no installation, and no ISO files on your local drive. Everything runs inside a sandboxed browser environment.
Enter – a revolutionary JavaScript-based PC emulator that lets you run classic operating systems directly in your web browser. While PCjs is famous for DOS and early Windows versions, running Windows XP on PCjs is the ultimate test of its power and your patience. Pcjs Windows Xp
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Windows XP requires at least a Pentium-class CPU (586) and 64MB+ of RAM. PCjs primarily targets 386/486 emulation for speed reasons. However, the experimental configuration can be pushed to emulate a 486DX with enough RAM to boot a stripped-down version of Windows XP. Relive the Blast from the Past: Running Windows
So open your browser, head to pcjs.org , and take a slow, pixelated trip back to the early 2000s. Just don’t expect to get any work done.
The short answer:
Note: You won't get Aero, USB support, or service packs beyond SP1. This is a proof-of-concept, not a daily driver.