When I attempt to download this file, sometimes it only downloads about 700KB (the file is 40MB) then I get the message that the download is complete. If I try to download the file again, it works properly.

The problem seems prevalent in IE, although I've had it happen in Chrome sometimes too.

I have the following code:

<input type="button" 
    value="Agree to Terms and Download" 
    onClick="location.href='/downloads/setup.exe';" />

If it matters, this is over a secure connection.

I also tried zipping the file, and had the same issues.