title: Internet Explorer removes .exe extension from download when followed by URL parameters
body: <p>I am serving files from Amazon S3 now, and I generate a secure URL using the API. Works great everywhere except for people downloading .exe files in IE. I have tested this on IE 8 and 7. </p>
  
  <p>If running a local webserver you can test by putting notepad.exe in your web root. 
  Go to <a href="http://localhost/notepad.exe" rel="noreferrer">http://localhost/notepad.exe</a>  (or equivalent)
  Now try <a href="http://localhost/notepad.exe" rel="noreferrer">http://localhost/notepad.exe</a>?</p>
  
  <p>It should save the file as notepad, without extension. Is this a 'feature' because googling it is coming up with nothing. Thanks to the whole issue of IE extensions, you can't search for anything on file extensions. </p>
  
  <p>Also, if the file has multiple periods in the name, it sometimes gets a [1] or [] added to the end.</p>
  
  <p>Any ideas? Docs on this terrible behavior? It seems like it must be a security feature, but I have yet to find an option to disable it. </p>
  
  <p>And as always, thank you.
  Tim  </p>