IE : Unable to download * from *. Unable to open this Internet site. The requested site is either unavailable or cannot be found

Question

I have an issue with my website and IE. I have a file Document.ashx that becomes a document from my database depending on the parameter passed in the query

Answer 1

This issue occurs in IE8, and possibly earlier versions - but is resolved in IE9+. It is related downloading documents over SSL.

To resolve the issue in my application, I had to add the following two headers to the download (written in PHP):

header("Cache-Control: private");
header("Pragma: cache");