Microsoft wants you to update Internet Explorer. They want you to update so badly that the company actually plans to stop supporting every version of the browser except for Internet Explorer 11. No security updates, no compatibility fixes, no support. The deadline to update before the company completely drops support is January 12th, 2016.
The company cited increased protections in IE11 that better guard customers against malware and viruses. Microsoft also said that IE11 is faster than their earlier browsers, and that dropping support for nothing but the newest browser would help Web and app developers work more efficiently.
Surprisingly, Microsoft has added "legacy" mode for IE11 to help enterprise customers whose software supports only older versions of Internet Explorer. While I'll always tell you that keeping your Web browser up to date is one of the most important things you can do, I suspect that Microsoft dropping support isn't entirely to support updates.
I think that the company's reasons behind dropping support for older browsers might have something to do with Microsoft supposedly shutting down its Surface tablet, firing thousands of employees and supporting a complete business model reorganization.