The story goes back to July 2012. The European Union opens an investigation because they suspect Redmond not to let the 28 million users of Windows 7 SP1 choose their web browser. The giant then admits a technical problem prevents BrowserChoice.eu to display, that allows you to select the browser.
However, this "technical problem" is contrary to the Commission's requests
So, again, this giant is mind-numbingly trying to outsmart anyone who stands in their anti-competitive practices.