Ok. Are you using IE?
There seems to be what may be a bug which I think is related to the choice of IE (Metro) or IE (desktop). For convenmience, I would first suggest you copy the file over to the Desktop.
But, whatever, right click the file and, under the "general" tab. where it says "Open with", select "Change" and change it to any other browser you have installed, or, if you only have one browser, re-establish it - (Keep using IE).
see if that works