Since I just stumbled over the same problem, what was this reply?
Firefox on Windows, as well as Internet Explorer, choke on the *.ashx extension and don't know what do do with it.
Would it be possible to put the original filename into the HTML meta information?
|Response.AddHeader("content-disposition", "attachment; filename=\"" + OriginalFilename + "\""); |
This would keep the universal *.slfb.ashx extensions while ensuring that, upon downloading the actual file, all browsers would know what to do with the file.