Today, Microsoft is announcing the end-of-support of the RC4 cipher in Microsoft Edge and Internet Explorer 11. Starting in early 2016, the RC4 cipher will be disabled by-default and will not be used during TLS fallback negotiations. There is consensus across the industry that RC4 is no longer cryptographically secure. Our announcement aligns with today’s announcements from Google and Mozilla, who
![Ending support for the RC4 cipher in Microsoft Edge and Internet Explorer 11](https://cdn-ak-scissors.b.st-hatena.com/image/square/b77e3f851f49a8d3efa97205095340a5ca843888/height=288;version=1;width=512/https%3A%2F%2Fblogs.windows.com%2Fwp-content%2Fthemes%2Fmicrosoft-stories-theme%2Fimg%2Ftheme%2Flogos%2Fwindows.jpg)