http://www.msftconnecttest.com/redirect
I use a Web Browser Chooser app that allows me to choose which web browser from a list of installed browsersthat will popup whenever a URL is loaded outside of a browser. It shows the URL in the title bar thatit will go to once the browser choise is selected from the list. Sometimes when Windows starts, it'll automatically popup with "http://www.msftconnecttest.com/redirect" in the titlebar.

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