Microsoft Pulling the Plug On Windows XP In Three Years Unknown Lamer (UID: 78415) posted about 2 years ago | from the kill-it-with-fire dept. 315 An anonymous reader wrote in with an article from myce. Microsoft will be discontinuing all support for Windows XP in Spring 2014. Coinciding with the announcement, Microsoft released a 1,000-day countdown gadget to help XP users pass the time until their IT departments get into gear. Maybe.