IE8 won't download a file with a custom mime/type with UAC enabled
问题 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 chrome, the file is downloaded properly and our application is launched via a custom mime type and all is well. However, with IE8, I receive a dialog "unable to download file from . Unable to open this internet site. The requested site is either unavailable or cannot be found. Try again later". Using fiddler, I verified that IE