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"This doesn't appear to be one of Google's April Fools' jokes. YouTube's browser checker seems to be flagging Internet Explorer 8 on Windows XP and Internet Explorer 10 on Windows 7 as unsupported.\r\n\r\nWe've tested this issue out on a few Windows machines and it appears that other versions of the browser that should be supported aren't affected. Windows 8 users with IE10 can access YouTube just fine, as can IE9 users.\r\n\r\nIf you're running IE8 on Windows XP or you've installed IE10 on Windows 7 in the last month or so, however, you're probably seeing YouTube's &amp;quot;Your browser is deprecated, please upgrade&amp;quot; page.\r\n\r\nThis is the same error that IE6 and IE7 users receive on YouTube:\r\nOops, your web browser is no longer supported.\r\n\r\nYouTube works with a wide range of browsers. However, if you'd like to use many of our latest and greatest features, please upgrade to a modern, fully supported browser.\r\n\r\nFind the latest versions of our supported browsers below.\r\nHere is what happens when you visit YouTube.com on IE8 on Windows XP:\r\n\r\n\r\n\r\nHere's IE10 on Windows 7:\r\n\r\n\r\n\r\nBy contrast, here's IE10 on Windows 8:\r\n\r\n\r\n\r\nYou will notice that I'm simply on YouTube.com, as opposed to youtube.com/supported_browsers, because I wasn't redirected. Here's what happens if I go to that page manually:\r\n\r\n\r\n\r\nThe good news is that this issue can be easily circumvented by simply clicking the blue &amp;quot;No thanks&amp;quot; button or by going to YouTube.com again. Still, it's quite misleading for users to see, especially if they're on the latest version of Microsoft's browser.\r\n\r\nYouTube dropped support for IE6 back in March 2010. The company then killed support for IE7, Firefox 3.5, and Safari 3 in August 2011.\r\n\r\nThis would suggest that IE8 is next, but YouTube can't exactly drop support for it as easily as its predecessors. That's because IE8 is the latest version Windows XP users can install (an ancient OS millions are still using). IE9 is only for Windows Vista and Windows 7, while IE10 is only for Windows 7 and Windows 8.\r\n\r\nStill, Google has lately been very aggressive with Microsoft. Furthermore, the company dropped IE8 support for Google Apps in November 2012.\r\n\r\nIf this were just IE8, we could potentially see this as a legitimate message, especially since it can be bypassed. Given that it shows up on IE10 on Windows 7, but not IE10 on Windows 8, we're pretty certain this is a bug.\r\n\r\nWe have contacted Google and Microsoft about this issue.\r\n\r\nSee also - IE10 steals market share from IE9 and IE8 after landing on Windows 7; Firefox and Chrome make minor gains\r\n\r\nTop Image Credit: Eric Piermont/Getty Images"^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/google/2013/04/01/possible-bug-causes-youtube-to-detect-ie10-on-windows-7-and-ie8-as-no-longer-supported/>