Many businesses have built internal web applications that rely on Internet Explorer 8. _This was perfectly fine for many years as Windows XP was still being supported. _But as end-of-life for XP is only days away they are upgrading their operating systems and web browsers. _To ease the pain of having to rewrite their web applications, Microsoft has introduced a “Enterprise Mode” within IE11 for Windows 7 and Windows 8. _As Microsoft describes it “A modern, up-to-date browser that helps customers extend their existing investments in older Web apps.” Some of the areas targeted by Enterprise Mode include: User agent string differences. Many legacy Web apps use browser detection, not today’s best practice of feature detection. By replicating the original Internet Explorer 8 user agent string, Enterprise Mode works for sites that fail if they can’t recognize IE8 as the browser. ActiveX controls and other binaries. Some ActiveX controls silently fail if they query the browser version and get a response they don’t expect, so Enterprise Mode appeases these by...

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