Or rather, the Internet Explorer 12 that never was. When Microsoft first started leaking details about Windows 10 back in 2014, the plan seemed simple: Keep Internet Explorer for the old guard, and introduce "Project Spartan" for the future.
And then it crashes. Hard.
Microsoft scrubbed the code so thoroughly that only museum builds remain. Internet Explorer 12 is the Zune of browsers. It was the bridge between the clunky IE6 era and the modern web. But Microsoft realized that the "Internet Explorer" brand was toxic. It was the browser you used to download Chrome. internet explorer 12 windows 10