Hey,
Have any changes been made to how IE10 and 11 handles Content-Disposition? I have a problem with an ASP.NET application that is giving IE10's download manager the URL in the hyperlink rather than the filename specified in the Content-Disposition header in the app. This has the knock-on effect that the Open and Save As buttons in the Download Manager fail (i.e. do nothing). Can't even cancel out of it!!!
Without re-inventing the wheel, the thread on asp.net Forums is here: http://forums.asp.net/post/5614115.aspx
IE9 and less, and all other non-MS browsers are fine.