Internet Explorer 11

IE11 features redesigned developer tools, support for WebGL, enhanced scaling for high DPI screens, prerender and prefetch. After launch IE11 got support for HTTP/2. In addition, IE11 supports Full Screen and Orientation APIs, CSS border image support, JavaScript enhancements, DOM mutation observers, Web Cryptography API, video text track support, encrypted media support and an improved HTML editor. IE11 uses Transport Layer Security v1.2 as the default protocol for secure connections and deprecates RC4 cipher suite. The "document mode" feature in the developer toolset (F12) allows simulating the rendering behaviour of Internet Explorer versions 5 to 10 to facilitate testing pages for compatibility. Internet Explorer 11 for Windows RT does not support Java and other add-ons. Removed features • IE11 has deprecated document.all, meaning that code that checks for its presence will not detect it, but code that actually uses it will continue to work. Additionally, the attachEvent proprietary API has been removed. • Work Offline command removed from File menu • Drag and drop of selected content from IE to other programs like Word or WordPad • Use large icons for command buttons • Some Group Policy settings are no longer supported. • Ability to view all cookies at once via Developer Tools • Ability to disable tabbed browsing • autocomplete="off" for input type="password" Added features • KB3058515 released on June 9, 2015, added HTTP Strict Transport Security support to IE 11. • KB3139929 bundles a patch which adds advertising of a Windows 10 upgrade offer to the new tab page. ==Performance==

In a November 2013 review by SitePoint, IE11 scored better than Google Chrome 30 and Firefox 26 in WebKit's SunSpider test and Google's WebGL test. It tied with Chrome for fastest in Microsoft's "fish aquarium" benchmark for WebGL and came last in Google's V8 performance benchmark. As a result of the speed improvements, the reviewer said "if you switched to Chrome for speed alone, you're now using the wrong browser." IE11 was also observed to use less memory with multiple tabs open than contemporary versions of Chrome and Firefox. ==History==

Though an internal build of IE11 was leaked on March 25, 2013, its first preview version was not formally released until June 2013, during the Build 2013 conference, along with the preview release of Windows Server 2012 R2 and Windows 8.1. On July 25, 2013, Microsoft released the developer preview of Internet Explorer 11 for Windows 7 and Windows Server 2008 R2. With the release of Windows 11, Windows Server Insider Build 22463 and later, Internet Explorer is no longer preinstalled on any new devices (the application that is, while its core component is due to Microsoft's integration of IE in Windows), but users can still launch Internet Explorer from the Control Panel's browser toolbar settings on or via the PowerShell. Microsoft Edge is the only preinstalled browser in the operating system. An Internet Explorer mode is however provided in Microsoft Edge to run legacy websites. On February 14, 2023, Microsoft permanently disabled IE11 on the Windows 10 Semi-Annual Channel (SAC) as part of a Microsoft Edge update released on February 14, 2023. IE11 visual references, such as the IE11 icons on the Start Menu and taskbar, were set to be removed from Windows 10 SAC by the June 2023 Windows security update ("B" release) on June 13, 2023, however this decision has been reverted. ==See also==