As it was forewarned last week, Internet Explorer 8, 9, and 10 are retired as of today; Microsoft will be focusing on Internet Explorer 11 and its Edge browser going forward.

You can still use the old browsers of course, but you'll be vulnerable to viruses and the like, and be nagged by Microsoft to update. Head here to download Internet Explorer 11 or Edge, or update through your browser (older versions may not let you, though).