Microsoft’s Internet Explorer (IE) was first included with Microsoft Windows 95; it is a much-maligned Internet browser, primarily due to its intermittent security issues and declining user base.
IE’s dominance came in the early 2000s, when it captured 95% of the market, but, with growing competition from Mozilla’s Firefox and Google’s Chrome, declined to somewhere between 27% and 54% of the market late in 2012.
On March 17th, Microsoft announced that Spartan –, a new, improved, Internet browser – will replace IE as the default browser in Windows 10.
In addition, by January 2016, Microsoft will support only the current versions of Internet Explorer and will discontinue support for all non-current versions. (The current version is IE 11.)