IE8 won't download a file with a custom mime/type with UAC enabled

Question

I have a .net service running on the local machine (Windows 7 x64, IE8, .net 3.5, C#) that returns a file to the browser in response to a user action. Using firefox or chrom

Answer 1

Need to make sure "no-store" appears in your header before "no-cache". See this post: http://blogs.msdn.com/b/ieinternals/archive/2009/10/03/internet-explorer-cannot-download-over-https-when-no-cache.aspx